ci (format): add auto-black formatter

.github/workflows/black.format.yml

@@ -0,0 +1,10 @@
+name: Format Code with Black
+
+on: [push, pull_request]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: psf/black@stable