feat[ci]: add conventional-commit validation to pull requests

Author: charles-cooper

.github/workflows/pull-request.yaml

@@ -0,0 +1,20 @@
+# jobs to validate pull request well-formedness
+
+name: Validate PR metadata
+
+on:
+  pull_request_target:
+    types:
+      - opened
+      - edited
+      - synchronize
+
+permissions:
+  pull-requests: read
+
+jobs:
+  main:
+    name: Validate PR title
+    runs-on: ubuntu-latest
+    steps:
+      - uses: amannn/action-semantic-pull-request@v5