Support conventional commits

[keikoro]

I'd like to propose we introduce conventional commits to increase the specificity of commits/for better differentiation of commits/overall quality of commit messages.

Having had a look at recently submitted PRs, I feel like requiring a commit message type would reduce the number of PRs which try to do too much at once because it a) forces people to consciously think about what a commit is trying to achieve and b) makes it immediately obvious when there's a potential lack of separation of concerns (e.g. lots of different types mixed together).

[keikoro]

Gitlint could be used in a GitHub workflow to enforce CC types, see their Contrib Rules docs.

[keikoro]

Conventional commits can also help with better structured release notes, e.g. when used with actions like release-please.

[OsaAjani]

I do like the general idea of more standardized commit but I fear this would be yet another obstacle on the path for debutant people just trying to help.
It's always a hard choice between more rules for better uniformity and more freedom for less hassle ^^