[Feature Request] Transmit grayscale video to increase penetration and link quality

[Sat1l]

As couple of world-class events have shown - in conditions where both HDZero and Analog systems fall apart Analog can withstand this challenge by forcing it to grayscale video transmission. I haven't looked into the code deep enough yet to understand if this is even possible without a hardware changes or major code overhauls (if packets sent require the RGB values, "unlike" analog), but if that's possible this could be major since looks like it becomes more of a trend to bring a couple of analog quads to competition in case HDZero lacks.

Also the freed bandwidth might be used to push the transmitted fps to 100hz and maybe allow the composite cameras to jump up to higher refresh rates.