[iOS] Exploring MVI framework for Kotlin Multiplatform, part 3

Today we learned about SwiftUI and Navigation in swift.

We spent some time trying to implement a TodoDetail screen in iOS for the MVIKotlin sample project.

We'll continue this in the next MVIKotlin stream. https://github.com/arkivanov/MVIKotlin/issues/18#issuecomment-607064511