Divorce biome lib and cleanup code

[wsor4035]

see the title

• get rid of biome lib
• fix .luacheckrc
• add github action for luacheck
• replace global settings with settings api
• replace default_settings.txt file with descriptions in settings api
• fix various luacheck warnings
• profit?

fixes #9

[wsor4035]

note: this will need backwards compat testing to make sure nothing crashes on old worlds with this PR

[wsor4035]

tree generation does now work, note that it is laggy as all get out due to way to many trees being placed and spawning, uncomment the set node stone and that will keep them from spawning to play with placement values

[ghost]

Might be nice to go away with biomelib. I might try to port this to work with mineclone 2, but I dont know if I will for sure.

[wsor4035]

Might be nice to go away with biomelib

more like required, given how terrible its perf is

I might try to port this to work with mineclone 2

make a pr, be glad to make this game agnostic.

above said, i do need to finish this....

[BuckarooBanzay]

LGTM 👍 (ingame is not better or worse than before 😉)

[Niklp09]

great work, wsor! I've added some comments where you can make optimizations

[Niklp09]

tested a bit ingame