Add better walking animations

With the new PCVR lighting options its very apparent how stiff the player walking animations are (visible via the self shadow) and obviously on other players in the game

Seems from the torso up there's almost no animation other than the inverse kinematics from hand/head position changes

Would suggest copying the approach that Population One had for VR walking animations with the torso and arms bobbing (but anchored to the head/hands obviously to prevent desync/motion sickness), think this is the best implementation I've seen in VR for this purposes that made the characters feel much more realistic when moving