Add GH action to check PR title

.github/workflows/commitlint.yml

@@ -0,0 +1,27 @@
+name: Commitlint
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  commitlint:
+    name: Check PR title conforms to @commitlint/config-conventional
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js environment
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Lint PR title
+        env:
+          PR_TITLE: ${{ github.event.pull_request.title }}
+        run: echo $PR_TITLE | yarn commitlint