[WIDGET] add a widget to show the currently opened apps

[muezabdalla]

Description of the widget

add a widget or a magic variable that show the currently opened apps
example:

Implementation proposal

No response

Example usage

(task-bar ; this name is also used on waybar
:title bool ; to show the title of the application
:icon bool ; to show the icon of the application
)

Additional context

No response

[elkowar]

This is sadly very heavily dependant on if you're using X11 or wayland, and in case of wayland also on the specific compositor you're using. While possible, I feel like this is currently somewhat out of scope, and would better be implemented externally as some tool that fetches the information (and potentially just spits out yuck syntax for use in literal widgets)