A small, fast, drop-in replacement for git-hooks.nix

Add Commitizen preset #17

Merged poacher.dev
targeting main from deleted fork:presets/commitizen/init
Merged opened by and assigned to poacher.dev
targeting main from deleted fork:presets/commitizen/init

This PR adds a Commitizen preset for commit message checking. Similar to commitlint, but more customizable and not limited only to conventional commits.

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