Add basic vanilla world generation

[pixlperfect01]

Feature

• Vanilla-ish World generation

Reason

• Who wants to play in a superflat world? That's what I thought, now let's add some world gen!

[Iapetus-11]

The first working version of the AbstractWorldGenerator subclass should be saved just so we can see how far we've come!

[jonafinmicclen]

is this repo dead, if not i can implement the world generation for u. Here is what ive done earlier (Wasnt taking it seriously then) https://github.com/jonafinmicclen/BlockBuild