Moved some functions & BlueColored repo

I'm moving away from JitPack, to the BlueColored repo.
The readme has instructions on where to get the new versions of the library.

The API has also changed a bit:
I've split up the "MCUtils" class into two new ones: "ImageUtils" and "ConfigUtils".
The function names and signatures are still the same, so migrating should be super simple.

Also bumped the Java version from 11 to 17.

Full Changelog: v1.0...v2.0

Initial release

Some useful functions that I find myself copying over often, so I split them off into another little separate library.