Provide Swift versions of all Objective-C example code in docs

[jmagman]

Page URL

objectivec code excerpts missing Swift versions, like https://docs.flutter.dev/development/add-to-app/ios/add-flutter-screen?tab=engine-objective-c-tab#using-the-flutterappdelegate

Page source

No response

Describe the problem

Some example code in the documentation is only provided in Objective-C.

Example:

Expected fix

Add Swift versions of this documentation so the user can see either tab:

Additional context

No response

[jmagman]

@leighajarett

[ZaddyRichie]

I don't get it wella

[leighajarett]

I think that all the examples now have Swift references, so closing this