Added HapticObserverApp and sample rate statistics

scenarios/WeissHapticSensorsUnitTest/CMakeLists.txt

...s/WeissHapticSensorsUnitTest/config/HapticObserverApp.cfg

source/RobotAPI/applications/CMakeLists.txt

source/RobotAPI/applications/HapticObserver/CMakeLists.txt

.../RobotAPI/applications/HapticObserver/HapticObserverApp.h

source/RobotAPI/applications/HapticObserver/main.cpp

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

source/RobotAPI/drivers/WeissHapticSensor/Response.h

...obotAPI/drivers/WeissHapticSensor/TransmissionException.h

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

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

source/RobotAPI/units/HapticObserver.cpp

source/RobotAPI/units/HapticObserver.h