Investigate CI solution for ensuring proper commit format for the first commit of PRs

Describe the enhancement or change
We pretty often run into issues where improper commit message formatting causes a release to not happen when expected.

This could be resolved by enforcing formatting on every commit like we do in core, but that would be a bit of an inconvenience for all but the first commit since we squash on merge and the commit message format after the first commit doesn't matter.

We may be able to use https://github.com/wagoid/commitlint-github-action or something similar to do this.

Also, if we do find a good solution here we should probably replicate it in the extension repos.

Jira Issue: PF-44

ファイルやテストは指定されていません。まずリポジトリの CI 設定を確認し、pull request の最初のコミットだけをチェックするために commitlint-github-action または同様のアプローチを評価してください。pull request の squash-merge の動作を維持できる実用的なチェックを文書化または実装し、それを extension repositories でも再現できるかどうかを判断できれば完了です。