Endpoints needed for a version web tool for modders

[LambdAurora]

Tools like the Quilt Import Utility (transfer to the Quilt website pending) would need two endpoints:

• one to list the game versions, but that's already covered so we're good
• another to list for a given game version:
  • the latest Quilt Mappings build
  • the latest loader version
  • the latest QSL version
    • maybe a list of the library/module hierarchy to list what modules are available for a given game version (since some modules are not always available for all versions)
  • the latest QFAPI version
  • ideally the latest Quilt Loom version too (tho, it might be better for it to be a separate one since I should request it much less and it's kind of not supposed to stay eternally since at one point Quilt Gradle is supposed to replace it)
  • not entirely sure about that one, but maybe the latest QKL version? might need work on QKL to stabilize its structure first