Document correlation to @googlemaps/react-wrapper library

Thanks for this library 🙏 great to have an official Google library that supports React components too. However, for the React [example here in the repo](https://github.com/googlemaps/extended-component-library/blob/3dc517076cd93aef91a768f41730dfb3fe116b95/examples/react_sample_app/src/App.jsx#L75C17-L87) are there also wrapper components for `gmp-map` and `gmp-advanced-marker` or should one mix this library with https://github.com/googlemaps/react-wrapper?