Need example for SwiftUI + AppOpen ads

Your example seems to cover every kind of ad except of AppOpen:
https://github.com/googleads/googleads-mobile-ios-examples/tree/main/Swift/advanced/SwiftUIDemo/SwiftUIDemo

For example by default there is no AppDelegate in SwiftUI app and even if you add it its `applicationDidBecomeActive` is never called.