Including flutterCompute

[BernardinD]

Are there any plans to include the new flutterCompute functionality?

I'm having issues using the google_sign_in plugin in the isolates so I'm hoping to use the new flutterCompute and a Completer to make a thread.join() type of functionality in the main isolate.

[deakjahn]

We rely on another package and I'm not yet sure which path that package will take.