ci: add commit lint workflow on PR to main branch

.github/workflows/commit-lint.yml

@@ -0,0 +1,19 @@
+name: Commit Lint
+on:
+  pull_request:
+    branches:
+      - main
+      - master
+      - trunk
+jobs:
+  conventions:
+    name: Conventional Commits
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        name: Checkout Code
+      - uses: webiny/[email protected]
+        name: Validate Commits
+        # optional, required for private repos:
+        # with:
+        #   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}