misc: windows: remove UWP/store files and code

.gitignore

CMakeLists.txt

compat/msvc/dlfcn.c

src/CMakeLists.txt

src/client/ring_signal.cpp

src/client/videomanager.cpp

src/connectivity/ip_utils.cpp

src/fileutils.cpp

src/jami/configurationmanager_interface.h

src/jami/videomanager_interface.h

src/manager.cpp

src/media/libav_utils.cpp

src/media/video/CMakeLists.txt

src/media/video/uwpvideo/CMakeLists.txt

src/media/video/uwpvideo/video_device_impl.cpp

src/media/video/uwpvideo/video_device_monitor_impl.cpp

src/media/video/video_input.cpp

src/sip/sipaccount.cpp

src/winsyslog.c

test/agent/src/bindings/signal.cpp