Trying to add a new biome

[KaboomRoads]

So I'm new to DST modding but not new to modding/coding in general.

I've been trying to add a biome to the already existing worldgen, but I'm not sure if there is a way to inject code or just add a biome in there in some way.
I have looked around and managed to understand the basics of how worldgen works, but I can't seem to find anything about modifying the vanilla worldgen, and looking at existing mods I simply cannot understand what they are doing to get their biomes in there.

What I think I should do is create tasks for my biome rooms and somehow add them to the dst_tasks_forestworld.lua file but I don't know how to inject code here if its even possible.
How can I do this?