CaptureFrameGrabber moved out of Windows app and into opencv_highgui DLL
video.cpp/.hpp moved out of Windows app and into opencv_highgui DLL, and renamed cap_winrt_video
MainPage.xaml: added m_cvImage to HighguiBridge
cap_winrt_highgui.cpp: testing input buffer copy - compiles & runs, but reporter (AsyncActionProgressHandler) is not getting called