SDK memory fixes and pipelines

SDK/C++/CMakeLists.txt

SDK/C++/private/feed_impl.cpp

SDK/C++/private/feed_impl.hpp

SDK/C++/private/frame_impl.cpp

SDK/C++/private/frame_impl.hpp

SDK/C++/private/image_impl.cpp

SDK/C++/private/image_impl.hpp

SDK/C++/private/observer_impl.cpp

SDK/C++/private/observer_impl.hpp

SDK/C++/private/operator_impl.cpp

SDK/C++/private/operator_impl.hpp

SDK/C++/private/pipeline_impl.cpp

SDK/C++/private/pipeline_impl.hpp

SDK/C++/private/property_impl.cpp

SDK/C++/private/property_impl.hpp

SDK/C++/private/room_impl.cpp

SDK/C++/private/room_impl.hpp

SDK/C++/private/system.cpp

SDK/C++/private/system_impl.hpp

SDK/C++/public/CMakeLists.txt