update docs
update nix-shell to auto install
rework custom pre-commit hooks to integrate better
add dockerfile for lefthook and integrate into drone
add some more hooks for formatting and linting some files
Co-authored-by: Darragh Elliott <me@delliott.net>
Reviewed-on: #5248
Co-authored-by: delliott <delliott@fsfe.org>
Co-committed-by: delliott <delliott@fsfe.org>
