Closed requested to merge seungha.yang/gst-plugins-bad:winrt-lib into master
mfdeviceprovider: Add support for device update Similar to the wasapi2 plugin, GstWinRT library will be used for UWP, and adding new GstWin32DeviceWatcher object implementation for Win32 desktop application.
wasapi2deviceprovider: Add support for device update ... by using newly implemented GstWinRT library
libs: Introduce GstWinRT library Adding a helper library for various WinRT specific implementations. Currently this library supports only DeviceWatcher abstraction object which can be used for dynamic device add/remove detection. See also https://docs.microsoft.com/en-us/uwp/api/windows.devices.enumeration.devicewatcher?view=winrt-20348