WIP Add SwiftUI Quickstart for Storage

[codeblooded]

This is an incomplete migration of the Storage Quickstart to Swift UI. It is an active work in-progress.

To Do

• [x] Add helpful comments
• [ ] Consider moving some state into the environment
• [ ] Add error dialogs to UI
• [ ] Spice it up with some styling and animation
• [ ] Consider support for multiple images
• [ ] Move to Swift target, replacing UIKit example