Add linting CI

Signed-off-by: Michel Hidalgo <michel@ekumenlabs.com>

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: colcon build & test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+# Cancel previously running PR jobs
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
+jobs:
+  lint:
+    name: Lint sources
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Setup python
+        uses: actions/setup-python@v4
+        with:
+          cache: pip
+      - name: Install python packages
+        run: pip install pre-commit
+      - name: Run linters
+        run: pre-commit run --all-files --verbose --show-diff-on-failure