Remove selection border when windows width is maximized

[robmv]

Currently a window with a maximized width (Meta+F) for a window alone on a column, what for a non tiled WM is a normal maximized window, shows the window selection border, that is annoying for me when most of the time I am on that single window, for example an IDE.

Proposed solution

When the window is alone in a column and the width is maximized, remove the selection border. The behavior is like the real full screen option that hides the top bar and the selection border.

Describe alternatives you've considered

The current solution is to use full screen mode Meta+Shift+F, but that isn't the same thing, I want to continue to have access to the top bar clock and extra icons and functionality, and some programs have different UIs in full screen mode vs maximized, for example Firefox, the tabs are hidden in fullscreen mode.

Additional context

I am happy trying to implement this if liked and if some guidance if this is the default or if a preference is wanted for it. I am inclined to implement it as the default with no preference, since I think it doesn't make sense to show the border for maximized windows, but I can agree to a preference.

[Thesola10]

I think the metric would be "all neighbors are cut off to the side of the screen" as this is the widest heuristic.