Add find package to deal with a dependency on an armrarx target which does not get build

source/RobotAPI/components/KITProstheticHandUnit/CMakeLists.txt

 armarx_component_set_name("KITProstheticHandUnit")
 
-#find_package(MyLib QUIET)
-#armarx_build_if(MyLib_FOUND "MyLib not available")
-#
-# all include_directories must be guarded by if(Xyz_FOUND)
-# for multiple libraries write: if(X_FOUND AND Y_FOUND)....
-#if(MyLib_FOUND)
-#    include_directories(${MyLib_INCLUDE_DIRS})
-#endif()
+find_package(Qt5 COMPONENTS Core Bluetooth QUIET)
+armarx_build_if(Qt5_FOUND "Qt5 Core or Bluetooth not available")
 
 set(COMPONENT_LIBS
     ArmarXCoreInterfaces