Tried to fix permissions and added deploy pypi

.github/workflows/main.yml

@@ -93,6 +93,7 @@ jobs:
     needs: [build, test, doc-test, format-test]
 
     permissions:
+      contents: read
       pages: write      # to deploy to Pages
       id-token: write   # to verify the deployment originates from an appropriate source
 
@@ -114,6 +115,18 @@ jobs:
       - uses: actions/deploy-pages@v4
         with: 
           path: doc/build/html
+
+  deploy-pypi: 
+    needs: [deploy-pages]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.8
+      - run: pip install --user build
+      - run: python -m build --sdist --wheel .
+