Enhance full-screen mode to display minimized app labels

[ya-nsh]

Current Behavior

When an application (app1) is set to full-screen mode, it occupies the entire screen space, hiding all other applications and interface elements.

Proposed Enhancement

While maintaining the current full-screen functionality for the focused application (app1), we propose adding a subtle reminder of other applications present in the same window:

The focused application (app1) becomes full-screen as per existing behavior.
If there are other applications (e.g., app2 and app3) in the same window, their labels should be visible on top of app1's full-screen layout.

Implementation Considerations

Consider making the labels clickable to quickly switch between applications.

I also really appreciate how smooth this whole tilting window manager is, Kudos to @koekeishiya for making such an exceptional application!