add release action

.github/workflows/release.yaml

@@ -0,0 +1,39 @@
+name: Publish to PyPI on Release
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.12
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install build
+
+      - name: Build 📦
+        run: python -m build
+
+      - name: Install 📦
+        run: python -m pip install .
+
+      - name: Print package version
+        run:
+          python -c "import vsr53; print('vsr53 version:', vsr53.__version__)"
+
+      - name: Publish 📦 to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          user: __token__
+          password: ${{ secrets.PYPI_API_TOKEN }}