.github: Add release workflow

Upload a pypi package when a Github release is published.

Signed-off-by: Pieter De Gendt <pieter.degendt@basalte.be>

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+name: Release
+
+on:
+  release:
+    types: [ published ]
+
+permissions:
+  contents: write
+
+jobs:
+  package:
+    name: Package
+    uses: ./.github/workflows/package.yml
+
+  release:
+    name: Release
+    needs: [ package ]
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Download build artifacts
+      uses: actions/download-artifact@v4
+      with:
+        path: dist
+
+    - name: Publish package to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        password: ${{ secrets.PYPI_API_TOKEN }}