Always use conventional commit messages

[GeckoEidechse]

Both @Alystrasz and I have been committing using conventional commit messages, primarily out of habit

I'm wondering if we should actually enforce this for master branch so that all commit messages on master are formatted as conventional commits?
(Note that this would not affect commit messages in PR'd branches as those commits are squashed on merge anyway, meaning only the person merging the PR has to make sure the merged commit is formatted correctly.

Also for verification requests we would use our own tag called verify: or something ^^