Cooperative Window Resizer

[epicdistraction]

I'll rebase to clean up the commits when the Side Split Ratio PR merges.

https://i.imgur.com/hXlCZfk.mp4

The Cooperative Window Resizer will automatically adjust the windows around it to avoid having to cmd tab and resize.

Summary

• Adds cooperative resizing for repeated side and corner shortcut cycling.
• Adds a new opt-in preference: “Resize adjacent windows when cycling side or corner shortcuts”
• Resizes directly adjacent tiled windows inversely when a repeated side/corner cycle changes the focused window
• Supports co-occupying windows in the same side/corner position so they follow the focused window’s resize
• Makes side and corner repeated shortcuts interoperable across compatible cycle lanes
• Handles clean side-to-corner tiled layouts, including stacked corner neighbors
• Keeps behavior conservative for ambiguous partial overlaps and unrelated floating windows

Testing

• Added frame-math tests for vertical/horizontal expansion and shrink
• Added tests for side actions, corner actions, side/corner interoperability, co-occupying windows, and the 2/3 split-ratio first-cycle regression
• Added regression coverage for partial same-side occupants in a four-corner 2/3 fixture

[rxhanson]

Awesome, I've been meaning to implement this for a while. I'll test it out tomorrow :)

[epicdistraction]

Added a small fix. The issue was the cyclic action would erroneously occur when moving a window from a top corner to the other top corner if the side split ratio was <50%