feat: changes for bungeecord 1.21-R0.3

[Kowagirl]

Changes to support migration from trove to fastutil and llbit/nbt to bungeecord/nbt.

Ref: https://github.com/SpigotMC/BungeeCord/commit/5dad41034b46f77b1f0ef5f972f354419f1f3287 https://github.com/SpigotMC/BungeeCord/commit/41e49dad6b28a3018cea9554708d9a4aa6f575ad#diff-3b9406f47460ad87eb8de4df60fb47941fa94f3b029716c659ed7646971b023c

Some closer attention to the NBT changes may be needed as I wasn't 100% sure of these.

[pixkk]

dev\simplix\protocolize\bungee\providers\BungeeCordComponentConverterProvider.java

replace

import net.md_5.bungee.protocol.TagUtil;

to

import net.md_5.bungee.protocol.util.TagUtil;