No Surface Mineshafts

A datapack that removes surface mineshafts found in the mesa (badlands) by removing the mesa type of mineshafts. It also adds normal mineshafts to the mesa that way mesa biomes should still have mineshafts in them.

A side effect of this is that you wont see the dark oak mineshafts, of which are the type of mineshaft that spawns in the mesa (including the surface).