(WIP) Mut actions (clone of bionics menu)

This is a clone of bionics menu per KA101's request.

Actually, it's just weird to make interface before the content, and I think it's better to design the structure of "mut_action" first, and modify the window properly.

Since this is a functional alternative of bionics, we have to think about "cost" of usage the mutation features.

I've blocked by some errors related to new structures.