ci: add PyPI publish workflow triggered on version tags

Author: cryptomilk

.github/workflows/publish.yml

@@ -0,0 +1,49 @@
+name: Publish to PyPI
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # needed for setuptools_scm to derive version from tags
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.13"
+
+      - name: Install build dependencies
+        run: pip install build
+
+      - name: Build distributions
+        run: python -m build
+
+      - name: Upload distributions as artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+  publish:
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/carconnectivity-plugin-campermode
+    permissions:
+      id-token: write  # required for OIDC trusted publisher
+
+    steps:
+      - name: Download distributions
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1