v204 typescript updates

v204 typescript updates:

• various minor documentation updates/refinements
• Player.rotation property comments clarify it to be just the head rotation in world coords
• Player.rootRotation read/write property! You can now rotate the player
  • this rotates the whole player, not their head
  • you can only rotate around the Y axis, so player always remains upright
• Player.setGripPoseAnimationByName() now takes PlayerGripPoseAnimationOptions
  • callback - a callback called when animation state changes
    • returns an AnimationCallbackReason of Starting or Stopping
• PanCameraMode got some additional properties (that seemed missing last week to work with then new Camera.getCameraModeObjectAs<T> api)
  • positionOffset - offset from target its looking at
  • translationSpeed - update tracking speed