avtka: rework light display code, allowing colours to ui
avtka: rework light display code, allowing colours to ui

This commit reworks the avtka UI significantly, allowing
colours to be displayed on the UI, and with the recent avtka
improvements, the labels are no longer shown. This makes the
overall UI much more minimal and nice to work with.

Closes #55.

Signed-off-by: Harry van Haaren <6e1296516ee88185cd60d9725251227ece1af74d@gmail.com>

openAVproductions/openAV-Ctlra