Restpose Fixes

[jankolkmeier]

Work in Progress, don't merge yet

Fixes:

• SkeletonRestPose now sets translation of HumanoidRoot (if T1R), and not just simply the first VJoint in tree
• T1RTransitionToPoseMU now animates HumanoidRoot translation
• Implement an option (currently set as default behavior!) to base poses on the setup/start pose of a VH instead of resetting unused bones to identity translation

Maybe @DennisReidsma can review these changes? Also looking for suggestions on how to make the changes to setAnimationPlayer in SkeletonPoseRestPose optional/configurable.

[jankolkmeier]

PS: I was pretty surprised that I had to do the change in 68a8f24c8ffc37fb7aea2844c1d0e7124b38ce5e, was the root translation never updated between frames before? Should this happen somewhere else? Without this line I was unable to animate our VH root translation.