Co-authored-by: MrGVSV <49806985+MrGVSV@users.noreply.github.com>

[RFC 3] Layout Callbacks

Add General Documentation

Split the renderer

Forwarded attributes on functional widgets

Wasn't compiling, and realized that the compiler enforces matching
generic types anyways.

Added QoL improvements to styling

This includes InputEvent, EventType, EventCategory, and
InputEventCategory