CItizen/animgraph: converted the "melee_punch" branch to the newer compositing. (See commit description) This fixes the biggest long-standing problem of this holdtype branch: the upper body going completely sideways when looking up and down WHILE moving. However, the way the pre-composite group is laid out and computes its 3 outputs has a couple of core assumptions that are broken by this: 1) the melee_punch idle is animated, instead of being a static pose, and 2) attacks should probably (?) be in the pre-composite. These 2 things don't mesh well with the established order. So there are a couple "bugs": attacks go 45° sideways while ducked, and the composite is a little off in some scenarios... but overall it's still a significant improvement for the time being.