Configurable Biosphere Biomes

[coolsa]

The biome generation is very different from the sphere generation. There are a few ways I would like to implement this:

• [ ] 1. Using a list of biomes, similar to the MultiMixedNoise biome source.
• [ ] 2. Using a preset that accesses all the biomes that would normally be in the overworld.

The first will likely be the easiest to add in, while the second adds the most compatibility with other mods.

[coolsa]

Further work on this: It may be impossible or far beyond my skill level to implement "biome grabbing", to nab a list of all overworld/nether/end biomes. Instead, the approach will be to create a biome source analogous to the one for the nether, instead of using parameters for altitude, weirdness, etc, we will simply have weighted options.z

Gotta read up on Codec usage however...