Adding workflow on v4 branch

.github/CODEOWNERS

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+*	@auth0/project-dx-sdks-engineer-codeowner

.github/ISSUE_TEMPLATE/Bug Report.yml

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+name: 🐞 Report a bug
+description: Have you found a bug or issue? Create a bug report for this library
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        **Please do not report security vulnerabilities here**. The [Responsible Disclosure Program](https://auth0.com/responsible-disclosure-policy) details the procedure for disclosing security issues.
+
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Checklist
+      options:
+        - label: The issue can be reproduced in the [nextjs-auth0 sample app](https://github.com/auth0-samples/auth0-nextjs-samples/tree/main/Sample-01) (or N/A).
+          required: true
+        - label: I have looked into the [Readme](https://github.com/auth0/nextjs-auth0#readme), [Examples](https://github.com/auth0/nextjs-auth0/blob/main/EXAMPLES.md), and [FAQ](https://github.com/auth0/nextjs-auth0/blob/main/FAQ.md) and have not found a suitable solution or answer.
+          required: true
+        - label: I have looked into the [API documentation](https://auth0.github.io/nextjs-auth0/) and have not found a suitable solution or answer.
+          required: true
+        - label: I have searched the [issues](https://github.com/auth0/nextjs-auth0/issues) and have not found a suitable solution or answer.
+          required: true
+        - label: I have searched the [Auth0 Community](https://community.auth0.com) forums and have not found a suitable solution or answer.
+          required: true
+        - label: I agree to the terms within the [Auth0 Code of Conduct](https://github.com/auth0/open-source-template/blob/master/CODE-OF-CONDUCT.md).
+          required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: Provide a clear and concise description of the issue, including what you expected to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: reproduction
+    attributes:
+      label: Reproduction
+      description: Detail the steps taken to reproduce this error and, ideally, share a repo of a minimal reproducible example. State whether this issue can be reproduced consistently or if it is intermittent.
+      placeholder: |
+        1. Step 1...
+        2. Step 2...
+        3. ...
+    validations:
+      required: true
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context
+      description: Other libraries that might be involved, or any other relevant information you think would be useful.
+    validations:
+      required: false
+
+  - type: input
+    id: environment-version
+    attributes:
+      label: nextjs-auth0 version
+    validations:
+      required: true
+
+  - type: input
+    id: environment-nextjs-version
+    attributes:
+      label: Next.js version
+    validations:
+      required: true
+
+  - type: input
+    id: environment-nodejs-version
+    attributes:
+      label: Node.js version
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/Feature Request.yml

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+name: 🧩 Feature request
+description: Suggest an idea or a feature for this library
+labels: ["feature request"]
+
+body:
+  - type: checkboxes
+    id: checklist
+    attributes:
+      label: Checklist
+      options:
+        - label: I have looked into the [Readme](https://github.com/auth0/nextjs-auth0#readme), [Examples](https://github.com/auth0/nextjs-auth0/blob/main/EXAMPLES.md), and [FAQ](https://github.com/auth0/nextjs-auth0/blob/main/FAQ.md) and have not found a suitable solution or answer.
+          required: true
+        - label: I have looked into the [API documentation](https://auth0.github.io/nextjs-auth0/) and have not found a suitable solution or answer.
+          required: true
+        - label: I have searched the [issues](https://github.com/auth0/nextjs-auth0/issues) and have not found a suitable solution or answer.
+          required: true
+        - label: I have searched the [Auth0 Community](https://community.auth0.com) forums and have not found a suitable solution or answer.
+          required: true
+        - label: I agree to the terms within the [Auth0 Code of Conduct](https://github.com/auth0/open-source-template/blob/master/CODE-OF-CONDUCT.md).
+          required: true
+
+  - type: textarea
+    id: description
+    attributes:
+      label: Describe the problem you'd like to have solved
+      description: A clear and concise description of what the problem is.
+      placeholder: I'm always frustrated when...
+    validations:
+      required: true
+
+  - type: textarea
+    id: ideal-solution
+    attributes:
+      label: Describe the ideal solution
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    id: alternatives-and-workarounds
+    attributes:
+      label: Alternatives and current workarounds
+      description: A clear and concise description of any alternatives you've considered or any workarounds that are currently in place.
+    validations:
+      required: false
+
+  - type: textarea
+    id: additional-context
+    attributes:
+      label: Additional context
+      description: Add any other context or screenshots about the feature request here.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: 🤔 Help & Questions
+    url: https://community.auth0.com
+    about: Ask general support or usage questions in the Auth0 Community forums
+  - name: 📑 FAQ
+    url: https://github.com/auth0/nextjs-auth0/blob/main/FAQ.md
+    about: Check some commonly asked questions
+  - name: 🚀 Examples
+    url: https://github.com/auth0/nextjs-auth0/blob/main/EXAMPLES.md
+    about: Check the examples to get up to speed with the SDK
+  - name: 📖 API Documentation
+    url: https://auth0.github.io/nextjs-auth0/
+    about: Check the public API documentation for in-depth overview of all the available features

.github/PULL_REQUEST_TEMPLATE.Md

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+<!--
+❗ For general support or usage questions, use the Auth0 Community forums or raise a support ticket.
+
+By submitting a pull request to this repository, you agree to the terms within the Auth0 Code of Conduct: https://github.com/auth0/open-source-template/blob/master/CODE-OF-CONDUCT.md.
+-->
+
+- [ ] All new/changed/fixed functionality is covered by tests (or N/A)
+- [ ] I have added documentation for all new/changed functionality (or N/A)
+
+<!--
+❗ All the above items are required. Pull requests with an incomplete or missing checklist will be closed.
+-->
+
+### 📋 Changes
+
+<!--
+Describe both what is changing and why this is important. Include:
+
+- Types and methods added, deleted, deprecated, or changed
+- A summary of usage if this is a new feature or a change to a public API
+-->
+
+### 📎 References
+
+<!--
+Add relevant links supporting this change, such as:
+
+- GitHub issue/PR number addressed or fixed
+- Auth0 Community post
+- StackOverflow answer
+- Related pull requests/issues from other repositories
+
+If there are no references, simply delete this section.
+-->
+
+### 🎯 Testing
+
+<!--
+Describe how this can be tested by reviewers. Be specific about anything not tested and why. Include any manual steps for testing end-to-end, or for testing functionality not covered by unit tests.
+-->

.github/actions/build/action.yml

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+name: Build package
+description: Build the SDK package
+
+inputs:
+  node:
+    description: The Node version to use
+    required: false
+    default: 18
+
+runs:
+  using: composite
+
+  steps:
+    - uses: actions/setup-node@v3
+      with:
+        node-version: ${{ inputs.node }}
+        cache: npm
+
+    - shell: bash
+      run: npm ci
+      env:
+        NODE_ENV: development
+
+    - shell: bash
+      run: npm run install:example
+      env:
+        NODE_ENV: development
+
+    - shell: bash
+      run: npm run build

.github/actions/get-prerelease/action.yml

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+name: Return a boolean indicating if the version contains prerelease identifiers
+
+#
+# Returns a simple true/false boolean indicating whether the version indicates it's a prerelease or not.
+#
+# TODO: Remove once the common repo is public.
+#
+
+inputs:
+  version:
+    required: true
+
+outputs:
+  prerelease:
+    value: ${{ steps.get_prerelease.outputs.PRERELEASE }}
+
+runs:
+  using: composite
+
+  steps:
+    - id: get_prerelease
+      shell: bash
+      run: |
+        if [[ "${VERSION}" == *"beta"* || "${VERSION}" == *"alpha"* ]]; then
+          echo "PRERELEASE=true" >> $GITHUB_OUTPUT
+        else
+          echo "PRERELEASE=false" >> $GITHUB_OUTPUT
+        fi
+      env:
+        VERSION: ${{ inputs.version }}

.github/actions/get-release-notes/action.yml

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+name: Return the release notes extracted from the body of the PR associated with the release.
+
+#
+# Returns the release notes from the content of a pull request linked to a release branch. It expects the branch name to be in the format release/vX.Y.Z, release/X.Y.Z, release/vX.Y.Z-beta.N. etc.
+#
+# TODO: Remove once the common repo is public.
+#
+inputs:
+  version:
+    required: true
+  repo_name:
+    required: false
+  repo_owner:
+    required: true
+  token:
+    required: true
+
+outputs:
+  release-notes:
+    value: ${{ steps.get_release_notes.outputs.RELEASE_NOTES }}
+
+runs:
+  using: composite
+
+  steps:
+    - uses: actions/github-script@v7
+      id: get_release_notes
+      with:
+        result-encoding: string
+        script: |
+          const { data: pulls } = await github.rest.pulls.list({
+            owner: process.env.REPO_OWNER,
+            repo: process.env.REPO_NAME,
+            state: 'all',
+            head: `${process.env.REPO_OWNER}:release/${process.env.VERSION}`,
+          });
+          core.setOutput('RELEASE_NOTES', pulls[0].body);
+      env:
+        GITHUB_TOKEN: ${{ inputs.token }}
+        REPO_OWNER: ${{ inputs.repo_owner }}
+        REPO_NAME: ${{ inputs.repo_name }}
+        VERSION: ${{ inputs.version }}

.github/actions/get-version/action.yml

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+name: Return the version extracted from the branch name
+
+#
+# Returns the version from the .version file.
+#
+# TODO: Remove once the common repo is public.
+#
+
+outputs:
+  version:
+    value: ${{ steps.get_version.outputs.VERSION }}
+
+runs:
+  using: composite
+
+  steps:
+    - id: get_version
+      shell: bash
+      run: |
+        VERSION=$(head -1 .version)
+        echo "VERSION=${VERSION}" >> $GITHUB_OUTPUT

.github/actions/npm-publish/action.yml

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+name: Publish release to npm
+
+inputs:
+  node-version:
+    required: true
+  npm-token:
+    required: true
+  version:
+    required: true
+  require-build:
+    default: true
+  release-directory:
+    default: './'
+
+runs:
+  using: composite
+
+  steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Setup Node
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ inputs.node-version }}
+        cache: 'npm'
+        registry-url: 'https://registry.npmjs.org'
+
+    - name: Install dependencies
+      shell: bash
+      run: npm ci --include=dev
+
+    - name: Build package
+      if: inputs.require-build == 'true'
+      shell: bash
+      run: npm run build
+
+    - name: Publish release to NPM
+      shell: bash
+      working-directory: ${{ inputs.release-directory }}
+      run: |
+        if [[ "${VERSION}" == *"beta"* ]]; then
+          TAG="beta"
+        elif [[ "${VERSION}" == *"alpha"* ]]; then
+          TAG="alpha"
+        else
+          TAG="latest"
+        fi
+        npm publish --provenance --tag $TAG
+      env:
+        NODE_AUTH_TOKEN: ${{ inputs.npm-token }}
+        VERSION: ${{ inputs.version }}

.github/actions/prepare/action.yml

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+name: Prepare test
+description: Prepare an SDK test
+
+inputs:
+  node:
+    description: The Node version to use
+    required: false
+    default: 18
+  cache:
+      description: The cache key identifier to use
+      required: true
+
+runs:
+  using: composite
+
+  steps:
+      - uses: actions/setup-node@v3
+        with:
+          node-version: ${{ inputs.node }}
+          cache: npm
+
+      - uses: actions/cache/restore@v3
+        with:
+          path: .
+          key: ${{ inputs.cache }}