REFAC: Move controller as a separate imstk library

CMakeLists.txt

Source/Collision/CMakeLists.txt

Source/Controllers/CMakeLists.txt

Source/Controllers/imstkCameraController.cpp

Source/Controllers/imstkCameraController.h

Source/Controllers/imstkDeviceTracker.cpp

Source/Controllers/imstkDeviceTracker.h

Source/Controllers/imstkLaparoscopicToolController.cpp

Source/Controllers/imstkLaparoscopicToolController.h

Source/Controllers/imstkSceneObjectController.cpp

Source/Controllers/imstkSceneObjectController.h

Source/Controllers/imstkSceneObjectControllerBase.h

Source/Devices/imstkDeviceClient.h

Source/Scene/CMakeLists.txt

Source/Scene/SceneElements/CMakeLists.txt

Source/Scene/SceneElements/Lights/imstkLight.h

Source/Scene/SceneElements/Objects/imstkSceneObject.cpp

Source/Scene/SceneElements/Objects/imstkSceneObject.h

Source/Scene/SceneElements/imstkSceneEntity.cpp

Source/Scene/imstkScene.cpp