
Add 3 types of DeepDrill into the game.
Ranged deep drill: mine all the resources on the map.
Large deep drill: bigger version of ranged deep drill, allowing up to 12 colonists/mechdroids (disabled in config by default) to operate at meantime.
Archotech deep drill: can drill specified resources from the void, without restrict of map.
Support all drillable thing from mods. 