`tabViewStyle(.sidebarAdaptable)`

[dfabulich]

https://developer.apple.com/documentation/SwiftUI/TabViewStyle/sidebarAdaptable

Tab views using the sidebar adaptable style have an appearance that varies depending on the platform:

• iPadOS displays a top tab bar that can adapt into a sidebar.
• iOS displays a bottom tab bar.
• macOS and tvOS always show a sidebar.

This matches Google's recommended "adaptive navigation" style.

https://developer.android.com/develop/ui/compose/layouts/adaptive/build-adaptive-navigation

The default behavior is to show either of the following UI components:

• Navigation bar if the width or height is compact or if the device is in tabletop posture
• Navigation rail for everything else

[dfabulich]

I have a stacked PR ready for this in dfabulich#1

I'm not going to target it to the SkipUI repo until PR #377 merges.