Is there a way to tinker with the build pipelines for iOS and Android?

I am currently working on implementing Auth0 into a native Android/iOS FlutterFlow app, so that users can be authenticated by an already-existing auth service hosted in Azure. The issue I am facing now is that, in order to use the official package (auth0_flutter), I need to be able to modify files such as build.gradle and Info.plist.

Is there any way to do this in FF currently? If not, how do you guys manage this when testing and developing? Just turn auth off for testing?

Thanks,
Jacob