Add more ultrawide-friendly layouts

[LGUG2Z]

In a Reddit comment, BlastedBrent highlighted the desire to mix horizontal and columnar layouts for a better experience on ultrawide and superultrawide monitors:

This may be a noob question but, is there a way to mix columnar and horizontal layouts, or just not strictly sticking to BSP in general? With the emergence of ultrawide and superultrawide displays, I found myself wanted to have layouts like these, which afaik can't really be set up in komorebi

The LeftWM project has a number of layouts that mix horizontal and columnar layouts which would be appropriate for ultrawide and superultrawide monitors. These should be relatively straightforward to port to komorebi, with the only additional work being calculating and validating the movement directions from each index based on komorebi's data model and the separation of containers, windows and layout dimensions.