"API keys with referer restrictions cannot be used with this API."

I want to add "Website restrictions" to my API key, but then I start getting "API keys with referer restrictions cannot be used with this API." errors when using this widget.

I believe the reason is that the underlying `google_maps_webservice` library calls the [API meant to be used in server applications](https://developers.google.com/maps/documentation/places/web-service/overview). Shouldn't `flutter_google_places` use the [API meant for client-side applications](https://developers.google.com/maps/documentation/javascript/places)?