add publish+ruff actions

.github/workflows/ruff.yml

@@ -0,0 +1,19 @@
+name: Ruff
+
+on:
+  push:
+    branches: [main]
+
+  pull_request:
+    branches: [main]
+
+  workflow_dispatch:
+
+jobs:
+  ruff:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: astral-sh/ruff-action@v3
+        with:
+          args: 'format --check --diff'