New APIs

[linear-code]

Introduce new APIs:

• For SwiftUI (maybe a view modifier or whatever makes more sense)
• VC API to present the form manually by the user
• Convenience API that will use the first window / scene found

[linear-code]

COCOA-1411

[philprime]

Reference implementation of a view modifier to display a view overlay like the user feedback form:
https://github.com/kula-app/OnLaunch-iOS-Client/blob/main/Sources/OnLaunch/SwiftUI/View%2BOnLaunch.swift