Add commit lint to project

This could help us to generate version and change log automatically.

Maybe some contributors doesn't write a good commit message, so you could do squash-merge and add your own message.

The issue names no files, tests, or entry points. Start by clarifying which commit-lint rules and automation are expected, then identify how version and changelog generation currently work. Done means the agreed commit-message checks and release automation are documented and verifiably working.

Written by the indexing model from the issue text.