build: lint pr title to be conventional commit (#9)

.github/workflows/lint_pr.yml

@@ -0,0 +1,17 @@
+name: "Lint PR"
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      # Please look up the latest version from
+      # https://github.com/amannn/action-semantic-pull-request/releases
+      - uses: amannn/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          validateSingleCommit: true