github: add workflow to publish releases

.github/workflows/publish-to-github.yml

@@ -0,0 +1,43 @@
+name: Publish to GitHub
+
+on: push
+
+jobs:
+  github-release:
+    name: Build distribution and push to GitHub
+    runs-on: ubuntu-latest
+
+    if: startsWith(github.ref, 'refs/tags/')
+
+    permissions:
+      contents: write  # IMPORTANT: mandatory for making GitHub Releases
+      id-token: write  # IMPORTANT: mandatory for sigstore
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: "3.12"
+    - name: Install pypa/build
+      run: pip install build
+    - name: Build a binary wheel and a source tarball
+      run: python -m build
+    - name: Create GitHub Release
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+      run: >-
+        gh release create
+        '${{ github.ref_name }}'
+        --repo '${{ github.repository }}'
+        --notes ""
+    - name: Upload artifact signatures to GitHub Release
+      env:
+        GITHUB_TOKEN: ${{ github.token }}
+      # Upload to GitHub Release using the `gh` CLI.
+      # `dist/` contains the built packages, and the
+      # sigstore-produced signatures and certificates.
+      run: >-
+        gh release upload
+        '${{ github.ref_name }}' dist/**
+        --repo '${{ github.repository }}'