Ability on windows module to change {shell} format

[joan31]

Hi,

Example config :

"sway/window": {
        "format": "{shell} {title}",
        "max-lenght": 50
}

Result :
xwayland Title_App
xdg_shell Title_App

But an idea, would be to have the ability to replace xwayland and/or xdg_shell for a custom string or icon for each.

Example :
[X] Title_App (for apps using xorg-wayland)
[W] Title_App (for apps using wayland)

The space in the bar will be more optimized.

Thanks for your work :)