* Add dedicated init priority for the sideband kscan. * Refactor sideband code for clarity. * Tweaks to direct kscan for clarity. * Make sideband behavior row optional for brevity. * Allow overriding ZMK Uno sideband behaviors.
* Invoke output selection from the slider on the ZMK Uno via sideband behavior setup, to simplify keymap.
* Make it easier to test split code with ZMK Uno hardware by adding a split left/right setup as well.
