This will help with input configuration UIs in games. Let's say you want to move from WASD to ESDF for navigation. This is currently quite difficult with lyte2d.

Main reason for this is the design decision to not use/expose events as first class. This is the right choice for Lyte2D, but it means that we need the right polling functions to cover the features required.

The API here will only deal with keyboard. I have some thoughts of unifying gamepad/mouse buttons with the keyboard in the future.