Implement modes for Logitech G213 Keyboard
Implement the following modes for Logitech G213:
- Off - Turn off all LEDs
- Cycle - Cycles all LEDs through all colours, at selected speed
- Wave - Cycles through all colours in a wave, in 4 directions, at selected speed
- Breathing - Breaths in and out the selected colour on all LEDs, at selected speed
Tested on my G213 using Linux only.
Edited by Tom Greenwood