Add ruff format CI check

Author: dangusev

.github/workflows/run_tests.yml

@@ -24,8 +24,10 @@ jobs:
         uses: actions/checkout@v5
       - name: Install dependencies
         uses: ./.github/actions/python-uv-setup
-      - name: Run Ruff
+      - name: Run Ruff linter
         run: uv run ruff check .
+      - name: Run Ruff formatter
+        run: uv run ruff format --check .
 
   mypy:
     name: Mypy