Switch Nether biomes to use Terrablender's api(Mod compatibility) going forward

[arazadaz]

Just as the title says. I would love for byg to add their Nether biomes using the terrablender's api rather than using their own Biomesource. This would allow for better compatibility with other mods. This should be the standard going forward from 1.19.2. I would even say to implement this in 1.19.2 as well, but there's an edge-case bug with the fabric version of terrablender on 1.19.2 where the Nether never gets initialized for fabric on later versions of terrablender 1.19.2 past terrablender version 1.29.