add linting GH workflow

.github/workflows/lint.yml

@@ -0,0 +1,25 @@
+name: Format
+
+on:
+  pull_request:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+jobs:
+  format:
+    name: Ruff
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.12'
+        cache: 'pip'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install ruff
+    - name: Lint with Ruff
+      run: ruff check --output-format=github .