More Biome variation

"More biome variation" adds 12 new biomes to the game, without adding any new blocks!

Biomes (Check "Images" for screenshots):

- red desert

- highlands

- extreme hills

- variated swamp

- rocky savannah

- frozenlands

- alpha forest

- oasis

- tall forest

- forest plateau

- taiga plateau

- variated jungle

-In some biomes the caves have been modified as well, with miniature lush caves and dripstone caves. note, that 1.17.1 doens't have 3D biome support, so it can be a bit stange with the cave biomes

Please report bugs and weird generation!

Thanks!