Add PyPI publishing for tags

.github/workflows/pypi-publish.yaml

@@ -0,0 +1,31 @@
+name: Publish to PyPI
+on:
+  push:
+    tags:
+      - "**"
+
+jobs:
+  publish_to_pypi:
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/configomatic
+    permissions:
+      id-token: write
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: "3.x"
+
+      - name: Install pypa/build
+        run: python3 -m pip install build --user
+
+      - name: Build a binary wheel and a source tarball
+        run: python3 -m build --sdist --wheel --outdir dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1