New AR Core endpoint + Gradle update + Flutterflow compatibility

[hlefe]

I wanted to inform you that I've forked your AR Flutter plugin to create an updated version available here: https://pub.dev/packages/ar_flutter_plugin_flutterflow. This fork was created because the original plugin had not been updated since 2022. Changes include an update to the AR Core endpoint, a gradle upgrade, and compatibility with FlutterFlow. I hope this fork will be useful to the community.

Best Regards,