[Feature Request] Add Preview for Windows When Switching Apps via Alt + Tab

[iamkartiknayak]

Description:
It would be helpful to have an option in the Cosmic Launcher to preview windows while using Alt + Tab to switch between applications. This feature could be enabled via a settings toggle, allowing users to see a live preview of open windows for each app, making it easier to select the desired window when multitasking.

Expected Behavior:

• When the Alt + Tab shortcut is pressed to switch between apps, a small preview window for each app should be shown, allowing users to see the current state of the open window.
• The user can cycle through the app list, with previews updating accordingly, before releasing the Alt key to select an app.

Ref Screenshot:
Similar to how app switcher is implemented in Windows