[Suggestion] Manual base struts

SpacedInvader

Not a replacement for the automatic struts that appear when a structure is placed near the ground, but rather a point-to-point manual build item. The base idea is to get rid of the floating structure effect when construction gets a little too far from the surface by allowing the player to manually add longer struts in a configuration of their choosing. These would mostly just be for eye candy, but on a functional level, they *could* add structural integrity to the base. As for resource use, I'm not sure if its possible in the current system, but they should using increasing resources (perhaps even exponentially increasing) the longer they get, so a short strut linking a room to a cliff face would be much cheaper than a long strut linking that same room to the seafloor far below.