[FEATURE] Lock screen?

Description of the requested feature

Would it not be cool if we could implement lock screens using eww?

Lets say we had the ability to define a lock-window that covers the whole screen on all monitors and blocks user input yata yata except for itself when created. You'd then be able to use widgets you've previously made or widgets made by others on your lock screen!

Imagine making a notification manager then putting it on your lock screen to show notifications or having status indicators there like wifi battery how many impending updates you have etc. or something as simple as a clock.

If there is already a way of doing this someone please let me know but as far as i can tell there isnt and im kinda surprised this isnt a feature already.

Proposed configuration syntax

(deflockwindow Name[vars?]
    ; just like defwindow but opens on all screens and blocks user input from reaching other apps when open
)

Additional context

No response