enable treefmt and commitizen in pre-commit-hooks.nix
Along with this, we also:
* bump: update nixpkgs of dev flake for pre-commit-hooks.nix to work
the older version didn't have cljfmt
* explicitly define project root in treefmt
* define `projectRootFile` in `treefmt`
* make `treefmt.projectRoot` as `inputs.services-flake`
* use github flake url
* flake.nix as projectRootFile
* add comment
* force override-input in test flake
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Co-authored-by: shivaraj-bh <sbh69840@gmail.com>
