Add GitHub Actions workflow for PyPI publishing using OIDC

.github/workflows/publish.yml

@@ -0,0 +1,33 @@
+name: Publish to PyPI
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/pip-add
+    permissions:
+      id-token: write
+
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    
+    - name: Build package
+      run: python -m build
+    
+    - name: Publish package distributions to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1