frameworks for nodecore!

craft frameworks out of wooden frames. they're smaller and can be rotated.

naming?

cg = catgirl, nc = nodecore. this prefix should be sufficiently unique.

TODO

• make framework optics-opaque only in the 1 dir.
• add lode versions
• come up with a better name for the nodes than "framework"?
  • the mod name will stay, because the mod does involve working with frames.
• make center of texture look like the rest of it.
• make ends look like they do in frames.