Citizen/animgraph: changes to sitting - The "b_sit" boolean is out, replaced by the "sit" enum. 1 = sitting normally, in any seat-like circumstances, and 2 = sitting on the ground, with its own set of poses. - Added the "sit_offset_height" float, active only if sit = 1, to let you adjust the height, currently with a range of -12 to +12. - Added the "sit_pose" float, to let you choose a sitting pose in either state. No randomization here, 0 = a default pose. - The sit stuff is now in a subgraph; this is a good place to start dogfooding it.