Complete biome refactor

[Sancires]

Completely overhaul biome directory structure, base biome distribution and features off of the Koppen system. Re-do awkward biomes and create new biomes for seamless climate transitions.

Major inclusions:

• [ ] Vanilla keys for each biome.
• [x] #128
• [x] Reorganization of file structures to mimic the Koppen climate system.
• [x] New pipeline.
• [ ] #142

[Sancires]

Tropical and Subtropical Biomes

• Remove Rainforests and variants. Rename Evergreen Forests to Temperate Rainforests.
• Rename and modify Wild Bumpy Mountains to Tropical Rainforests.
• Drastically alter and rename Rocky Bumpy Mountains to "Rocky Jungle". Make these biomes have large boulders, and sparser tree coverage. Maybe include smaller Jungle trees or Acacia trees.
• Rename Monsoon Mountains to Monsoon Forest.
• Remove Wild Highlands and Dry Wild Highlands. Monsoon Forests and Xerophytic Forests fill these roles.
• Remove Dry Rocky Bumpy Mountains. Use Xerophytic Forests instead.

[Sancires]

See DEPRECATED-biome-refactor branch for proper organization of biomes.

[Sancires]

This is kind of done - Will make a new, clearer issue eventually