1.19

[Foxite]

• Update Minecraft, Fabric etc to 1.19. I've updated the Fabric API to the latest version (0.55.1), the earliest version that has 1.19 support is 0.49, let me know if there are any objections to using the latest one.
• Fixed all compiler errors from Mojang-side refactoring.
• Fixed runtime mixin errors.
• Verified that basic username styling and mute roles work properly (after fixing mixin errors relating to the latter).
• Removed ServerPlayNetworkHandlerMixin, and replaced it with a STYLING_PHASE message decorator callback. *

* In the discord there has been discussion about whether or not this is the ideal approach. It probably isn't, but it should work.

Note: repository maintainer should create a 1.19 branch and change the target of this PR to that branch.

[Foxite]

The parts that I'm using in production work properly (that being username styles and muting), going to test chat formats next. Still, this is ready for review.

Edit: chat_format does not work right now.

[Gegy]

Merged in https://github.com/NucleoidMC/player-roles/commit/dcce2bc249d3167b8ddd788974237651458a5652, thank you so much for the PR! 😊