ci: Add workflow for uv lock file maintenance (#745)

Author: mkb79

.github/workflows/uv-lock-maintenance.yml

@@ -0,0 +1,38 @@
+name: uv lock file maintenance
+
+on:
+  pull_request:
+    paths:
+      - "pyproject.toml"
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.GH_PAT }}
+
+      - uses: astral-sh/setup-uv@v6
+        with:
+          enable-cache: true
+
+      - name: "Run uv lock command"
+        run: uv lock
+
+      - uses: stefanzweifel/git-auto-commit-action@v5
+        id: auto-commit-action
+        with:
+          commit_message: Regenerate uv.lock
+
+      - name: "Run if changes have been detected"
+        if: steps.auto-commit-action.outputs.changes_detected == 'true'
+        run: echo "Changes!"
+
+      - name: "Run if no changes have been detected"
+        if: steps.auto-commit-action.outputs.changes_detected == 'false'
+        run: echo "No Changes!"