[feature request] focus window by direction

[herry6548]

2026-02-22.15-41-39.mp4

I can find this feature in other tiled synthesizers, such as sway,hyprland, and mango. However, I can't find it here, so every time I switch the focus between multiple Windows, I have to go through all.

[pazos]

I believe it is a duplicate of #137

ie: make tile insertion configurable based on hooks