Add configurable crop growth light levels

[JamieIsGeek]

Closes #9631

[Machine-Maker]

So the problem with this, is that crops will break if they can't see the sky and have a light level lower than 8 (or smth close).

There are multiple light level and conditions for crops to grow, so idk how well a single configuration value will handle those.

[JamieIsGeek]

Yeah I saw something lower down in the class about crop survival which I guess could also be turned into a config option?

[JamieIsGeek]

There is this which is the only othert light dependant part of the CropBlock class so I'd assuming making this configurable would fix your issue?

@Override
public boolean canSurvive(BlockState state, LevelReader world, BlockPos pos) {
    return (world.getRawBrightness(pos, 0) >= 8 || world.canSeeSky(pos)) && super.canSurvive(state, world, pos);
}

[Machine-Maker]

Yeah, that would be one potential fix. I just wonder if an event allowing plugins to customize it more finely would be better. Idk how such an event would work tho.