Create an official cargo package

[optimizasean]

It would be nice to be able to cargo install hyprtheme instead of google->clone->build.

For those who build it, we have cargo installed already (required to build it) so this would just make it more discoverable and easier to get.
It would also be nice to support packages on other managers such as apt or pacman, but cargo would be an excellent start and probably a core package manager.

[optimizasean]

Appears to be an excellent tool! Currently building and installing to test!

[flick0]

The way theme-repo works has changed and this wud need a rewrite to work, (there's also a newer python branch that also is outdated)

[flick0]

Working on hyprtheme is the next thing on my list so I will be working on it pretty soon