ci: add GitHub Actions workflow for publishing Python package

.github/workflows/publish.yml

@@ -0,0 +1,34 @@
+name: Publish Python Package
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: "3.8"
+
+    - name: Install Poetry
+      uses: snok/install-poetry@v1
+      with:
+        virtualenvs-create: true
+        virtualenvs-in-project: true
+
+    - name: Install dependencies
+      run: poetry install --no-root
+
+    - name: Build package
+      run: poetry build
+
+    - name: Publish to PyPI
+      env:
+        PYPI_API_TOKEN: ${{ secrets.PYPI_API_TOKEN }}
+      run: poetry publish --username __token__ --password $PYPI_API_TOKEN