[FEATURE] Unity Style App Selection

[xSeekTruthx]

Is your feature request related to a problem? Please describe.

When using app switcher, it would be very cool to have the Unity Style of switching.

Describe the solution you'd like

The basic app switcher remains the same with number of windows for each app labeled by a number. However, while you are still holding the modifier key and the app with multiple windows is highlighted, it will then show all windows for that app after a short ms defined delay. When it does this, you can further select through, continuing to hit the secondary key until the desired window is highlighted. Then upon release of the modifier key, the window is brought to front.

Alternatives/Context

This is the behavior in Unity and would be really cool to have a tick button to set "Unity Style" in the App Switcher section. With a delay slider for pop-up, and maybe a size modifier for the window previews.