ci(mergify): Add PR title check (#1832)

Author: j3tan

.mergify.yml

@@ -8,6 +8,7 @@ pull_request_rules:
       - status-success=lint_test_build
       - label=ready-to-merge
       - label!=do-not-merge
+      - title~=^(build|ci|chore|docs|feat|fix|perf|refactor|revert|style|test)(\([^)]+\))?:\s.+$
     actions:
       merge:
         method: squash