Initial Open Sourcing of React Native Compatibility Check (#49311)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49311

This tool enables checking the boundary between JavaScript and Native for
backwards incompatible changes to protect against crashes.

This is useful for:

- Local Development
- Over the Air updates on platforms that support it
- Theoretically: Server Components with React Native

Check out the Readme for more information

Changelog: [General][Added] Open Sourcing React Native's Compatibility Check

Reviewed By: yungsters

Differential Revision: D69277991

fbshipit-source-id: 886a983d4b17609ce771cdd93b75f34bbd8417dc

scripts/build/config.js

@@ -54,6 +54,10 @@ const buildConfig: BuildConfig = {
       emitTypeScriptDefs: true,
       target: 'node',
     },
+    'react-native-compatibility-check': {
+      emitTypeScriptDefs: true,
+      target: 'node',
+    },
   },
 };