Add a publish workflow

.github/workflows/publish.yml

@@ -0,0 +1,29 @@
+name: Pypi package upload
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    - name: Build package
+      run: python -m buildx
+    - name: Publish package
+      uses: pypa/gh-action-pypi-publish
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_API_TOKEN }}