react-native-windows library

Summary:
This change adds the template for a RNW module to the existing react-native flipper project.

Basically, the changes in this diff are the product of executing the react-native-windows init for the existing library.

See:
https://microsoft.github.io/react-native-windows/docs/getting-started

https://microsoft.github.io/react-native-windows/docs/native-modules-setup

Notes:
There's some auto-generated module code contained in this change: ReactNativeModule (.h/.cpp)

allow-large-files

Reviewed By: passy

Differential Revision: D36751772

fbshipit-source-id: 41207bedb00ea147883f6d13336ed6c1da4454d7

react-native/react-native-flipper/package.json

@@ -29,7 +29,9 @@
   },
   "devDependencies": {
     "react": "^17.0.2",
-    "react-native": "^0.68.2"
+    "react-native": "^0.68.2",
+    "react-native-windows": "0.68.2",
+    "metro-config": "^0.67.0"
   },
   "resolutions": {
     "logkitty": "0.7.1",