[1.21.10] Port to 1.21.10 and Implement Greenhouse Config

[ChrysanthCow]

Resolves #65

Accidentally closed the old one, oops!

I will mark this as ready when possible.

Features

Specter Config is gone!

• Implemented Greenhouse Config.
  • Also includes a data fixer setup.
  • Greenhouse Config is not on my maven as of yet, as there are some things that need to be ironed out within its implementation.

Mapping Migration!

• Swapped mappings to Mojmap for an easier time with future deobfuscated versions.

General Porting!

• I've pretty much ported everything besides the config screen. I think that's on y'all to implement.

Quality Passes!

• Screenshots now stay inside the box rather than overflowing onto the lines.
• Fixed the margins of scrolling to the bottom of the screenshot view to match the top.