Made some forward declarations for VirtualRobot in ArmarPose

source/RobotAPI/core/RobotStatechartContext.h

source/RobotAPI/motioncontrol/MotionControl.cpp

source/RobotAPI/robotstate/CMakeLists.txt

source/RobotAPI/robotstate/remote/ArmarPose.cpp

source/RobotAPI/robotstate/remote/ArmarPose.h

source/RobotAPI/robotstate/remote/LinkedPose.cpp

source/RobotAPI/robotstate/remote/LinkedPose.h

...I/statecharts/GraspingWithTorques/GraspingWithTorques.cpp

source/RobotAPI/statecharts/OpenHand/OpenHand.cpp

source/RobotAPI/statecharts/PlaceObject/PlaceObject.cpp

source/RobotAPI/units/HeadIKUnit.cpp