ci: Add ruff format checking to workflow

.github/workflows/ci.yml

@@ -73,6 +73,15 @@ jobs:
       - uses: actions/checkout@v4
       - uses: chartboost/ruff-action@v1
 
+  ruff-format:
+    name: ruff-format
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - uses: chartboost/ruff-action@v1
+        with:
+          args: 'format --check'
+
   docker:
     name: Build Docker image
     runs-on: ubuntu-latest