Paper NMS-free

Works for paper 1.21, avoiding using NMS for future-proofing.

Full Changelog: 1.7.1...1.7.1b

1.7.1 Branched release

This is a branched version of 1.7.1, with the goal of being compatible with 1.21.4+, working off paper api instead of spigot, as well as ditching NMS.

• This does make accessing the vanilla beacon UI not work from the main menu, instead prompting you to crouch click instead.