Add Ruff linting workflow for pull requests

Author: philippesaade-wmde

.github/workflows/lint.yml

@@ -0,0 +1,26 @@
+name: "Ruff Lint"
+
+on:
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: read
+
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Set up Python
+        run: uv python install
+
+      - name: Run Ruff linter
+        run: uv run ruff check .
+
+      - name: Run Ruff formatter check
+        run: uv run ruff format --check .