osx: add functionnal direct renderer

src/private/directrenderer.cpp

src/private/directrenderer.h

src/private/videorenderer_p.h

src/private/videorenderermanager.cpp

src/qtwrapper/CMakeLists.txt

src/qtwrapper/instancemanager.cpp

src/qtwrapper/videomanager_wrap.h

src/video/renderer.cpp

src/video/renderer.h