Better Way to Navigate Menus

[snayff]

Suggested Feature

Currently, panels only have a concept of previous or next UIElement, so we can only navigate in that way, with the order being determined by order of creation (or addition to list).

Requirements

• panel has concept of where uielement sits in relation to others.
  • uielements can be in one of the 4 cardinal directions from another ui element
  • the relationship takes account of "wrapping around"

Additional Context

I wonder if we need to use a grid concept, with the ability to use blanks. This will make creation more complex, so will likely need some helper functions.