Overworldify

New in this version:

• Reverted nether biome map to be default.
• Added lava aquifers and flooded lava caves.
• Increased ore count to counter-act increased world height.
  • Glowstone, nether gold, nether quartz, debris but only for the type of debris that can generate at any y-level.
• Decreased amount of large fungi that generate.
• Changed bastion placement to be based on the terrain height, and to place terrain below it.
• Made ruined portals be unable to be placed on top of lava.
• Enabled nylium to generate at lower y-levels, causing cooler nether caves.

- Added support for 1.20.3-1.20.4 I lied, it is completely broken for this version.