add missing license headers

...ce/RobotAPI/components/RobotState/SharedRobotServants.cpp

source/RobotAPI/components/RobotState/SharedRobotServants.h

source/RobotAPI/components/units/HapticObserver.cpp

source/RobotAPI/components/units/HeadIKUnit.cpp

...tAPI/components/units/InertialMeasurementUnitObserver.cpp

.../RobotAPI/drivers/WeissHapticSensor/AbstractInterface.cpp

...ce/RobotAPI/drivers/WeissHapticSensor/AbstractInterface.h

source/RobotAPI/drivers/WeissHapticSensor/BinaryLogger.cpp

source/RobotAPI/drivers/WeissHapticSensor/BinaryLogger.h

.../RobotAPI/drivers/WeissHapticSensor/CalibrationHelper.cpp

...ce/RobotAPI/drivers/WeissHapticSensor/CalibrationHelper.h

...ce/RobotAPI/drivers/WeissHapticSensor/CalibrationInfo.cpp

source/RobotAPI/drivers/WeissHapticSensor/CalibrationInfo.h

source/RobotAPI/drivers/WeissHapticSensor/Checksum.cpp

source/RobotAPI/drivers/WeissHapticSensor/Checksum.h

source/RobotAPI/drivers/WeissHapticSensor/Response.h

...ce/RobotAPI/drivers/WeissHapticSensor/SerialInterface.cpp

source/RobotAPI/drivers/WeissHapticSensor/SerialInterface.h

source/RobotAPI/drivers/WeissHapticSensor/TactileSensor.cpp

source/RobotAPI/drivers/WeissHapticSensor/TactileSensor.h