Handling status bar color scheme and visibility in SwiftUI

Handling status bar color scheme and visibility in SwiftUI is tricky, especially with NavigationStack. The `.statusBarHidden()` modifier must be applied to the stack itself rather than child views, requiring shared state. A custom `StatusBarVisibileState` ObservableObject is introduced to manage visibility, along with a `StatusBarVisibilityUpdater` view modifier that automatically shows/hides the status bar based on scroll offset. This integrates with the ScrollKit library to create a Spotify-like sticky header experience where the status bar hides until the user scrolls down, and reappears correctly when navigating back.