Summary:
Adds utility script which crawls through a React Native app's Node dependencies and, for each compatible library, generates the relevant native code artifacts.
This script is for development purposes, and is not hooked into the existing codegen integration by design.
Changelog: [Internal]
Reviewed By: sota000
Differential Revision: D28915433
fbshipit-source-id: de36d3e1dc0e11aad3ca55cea5e6731db09c5377