Types for MotionHold attribute

Enumerator:
RSIMotionAttrHoldTypeNONE  None.
RSIMotionAttrHoldTypeGATE  Gate.
RSIMotionAttrHoldTypeAXIS_POSITION_ACTUAL  Actual Position.
RSIMotionAttrHoldTypeAXIS_POSITION_COMMAND  Command Position.
RSIMotionAttrHoldTypeUSER_ADDRESS  User address.