ci: add GitHub Actions workflow to publish on tag

.github/workflows/publish.yml

@@ -0,0 +1,26 @@
+name: publish-on-tag
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.[0-9]+.[0-9]+"
+
+jobs:
+  pypi-publish-on-tag:
+    name: Upload release to PyPI
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/clangd-tidy
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.8"
+      - run: |
+          python3 -m pip install --upgrade build
+          python3 -m build
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1