Add pre-commit workflow

.github/workflows/pre-commit.yml

@@ -0,0 +1,20 @@
+name: pre-commit
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    env:
+      SKIP: no-commit-to-branch
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/setup-python@v5
+      with:
+        python-version: |
+          3.9
+          3.x
+    - uses: pre-commit/[email protected]