This app will be use for a11y assessments. See [design doc](http://go/flutter-gar-reporting-q3-2023)    (internal only)

We now use a different approach for ios projects where the developer controls
the Xcode project file. This patch removes the old ".generated" approach in
favor of the new approach.

This example shows how to build a basic app using a custom Xcode project.
Future patches will bring the functionality up to par with hello_android.