Use Ruff for formatting in CI (#3)

.github/workflows/python.yml

@@ -1,4 +1,4 @@
-name: CheckPython
+name: Python
 
 on: [push, pull_request]
 
@@ -7,6 +7,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: psf/black@stable
       - uses: chartboost/ruff-action@v1
+        with:
+          args: 'check'
+      - uses: chartboost/ruff-action@v1
+        with:
+          args: 'format --check'
       - uses: jakebailey/pyright-action@v2