Remove borders when 'smart_gaps on' and 'smart_borders on'

[victordiaz]

When using Sway / i3-gaps and smart_gaps on and smart_borders on the gaps and border is removed if only one window is present in the workspace.

Currently, when I have one window, the gap is correctly removed but not the sway-borders. Do you think it would be possible to make it behave like upstream with the normal borders?

Btw, thanks so much for this fork. I really like sway and previously the pure windows flatness was the only reason taking me back to i3+compositor :) Now I feel comfy using sway!

[fluix-dev]

It seems like setting smart_gaps on and smart_borders on behaves correctly but using smart_gaps off with smart_borders on doesn't. I'll take a look at the various combinations (and hide_edge_borders since that exists now) and make the custom borders match.