Summary:
This adds the `DOMRect` and `DOMRectReadOnly` classes to React Native, mostly following the Web spec.
This is a requirement for `node.getBoundingClientRect()`, which we'll implement in React (in https://github.com/facebook/react/blob/main/packages/react-native-renderer/src/ReactFabricHostConfig.js#L134-L323).
Changelog: [General][Added] - Added Web-compatible `DOMRect` and `DOMRectReadOnly` classes to the global scope.
Reviewed By: ryancat
Differential Revision: D42963222
fbshipit-source-id: bf2ed15bfbfd71822cb6f969f8cc0a67c7834333
Rubén Norte