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

This also deprecates the old react-native windows implementation

windows/ReactNativeVideoCPP/PropertySheet.props

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets" />
+  <PropertyGroup Label="UserMacros" />
+  <!--
+    To customize common C++/WinRT project properties: 
+    * right-click the project node
+    * expand the Common Properties item
+    * select the C++/WinRT property page
+
+    For more advanced scenarios, and complete documentation, please see:
+    https://github.com/Microsoft/xlang/tree/master/src/package/cppwinrt/nuget 
+    -->
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+</Project>