[ #60972 ] Port most video classes to use D-Pointer

src/CMakeLists.txt

src/call.cpp

src/imconversationmanager.cpp

src/imconversationmanager.h

src/keyexchangemodel.cpp

src/keyexchangemodel.h

src/lastusednumbermodel.h

src/numbercategory.cpp

src/numbercategory.h

src/numbercategorymodel.h

src/private/videochannel_p.h

src/private/videocodec_p.h

src/private/videodevice_p.h

src/uri.cpp

src/uri.h

src/useractionmodel.cpp

src/useractionmodel.h

src/video/sourcesmodel.cpp

src/video/sourcesmodel.h

src/video/videochannel.cpp