[Feature] Individual border widths per side

[JohnMertz]

Low priority request to add support for border-{top,right,bottom,left}-width, or border-width=1 2 3 4, in order to allow for different border widths per side, similar to CSS.

Specifically, I like to use my menus as sidebars, so I anchor to the side, and make it partial width. I'd like to be able to add a border just to the exposed edge.

I have not looked at the code at all, so I don't yet know how feasible this is. This is possible in both rofi and wofi, but I'm really preferring the speed of tofi, so I'll take the missing border if it doesn't turn out to be a simple feature.

Specifications:
OS: Fedora Sericea 39
WM: Sway 1.8.1
VER: 0.9.1 (Nix package)