Integrating with iOS/MacOS

Credit to brotskydotcom/rust-on-ios for the inspiration of this method.

Setting up flutter run for iOS and MacOS is slightly more complicated than other platforms, due to its reliance on the Xcode user interface. This guide assumes you are running a relatively recent version of Xcode, which at the time of writing is Xcode 13. Other versions might have minor variances but the overall process should be the same.