letters for windows should be offset from letters of parent containers

[markstos]

When wmfocus is used with Sway it's possible that a container's label letter will immediately to the left of a windows letter so they look they go together, like: "sa" or "kl".

But if you type "kl" to go to that label, it doesn't work. As soon as "k" is typed, the parent container is focused and wmfocus quits.

This is different than how hinting works in Qutebrowser, Vimium and other keyboard-driven browsers and browser plugins, where if you see "kl" next to each other, then you type "kl" follow that hinted link.

wmfocus can address that potential confusion by adding a vertical offset when a letter needs to displayed next to the parent containers letter. For example, the second letter might might be lowered with vertical offset equal to 50% of the parent letter's box. I think this visual cue could also better communicate the parent-child relationship of the labels.