chore(actions): add conventional commit check

.github/workflows/conventional.yml

@@ -0,0 +1,19 @@
+name: Conventional Commit Check
+
+on: [pull_request]
+
+jobs:
+  conventional_commits:
+    name: Conventional Commit Check
+    runs-on: ubuntu-latest
+    steps:        
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: install convco
+        uses: taiki-e/cache-cargo-install-action@v1
+        with:
+          tool: convco
+      - name: Check commit format
+        run: convco check "${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }}"
+