Add support for react-native Windows Cpp/WinRT (#1893)

This also deprecates the old react-native windows implementation

windows/ReactNativeVideoCPP/ReactPackageProvider.idl

@@ -0,0 +1,7 @@
+namespace ReactNativeVideoCPP {
+[webhosthidden]
+[default_interface] 
+runtimeclass ReactPackageProvider : Microsoft.ReactNative.IReactPackageProvider {
+  ReactPackageProvider();
+};
+} // namespace ReactNativeVideoCPP