add black linter to CI

.github/workflows/lint.yml

@@ -0,0 +1,21 @@
+name: Lint
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/[email protected]
+
+      - name: Run linter
+        uses: psf/black@stable
+        with:
+          options: "--check --verbose"
+          version: "23.3.0"