[feature request] Cast the display of a phone

[josuah]

While the communication is Bluetooth, a protocol that does incremental drawing would allow to repaint only a small region at a time by comparing with the previous frame.

This does not play well with scrolling or animations, but a filter could be added to wait that the phone screen becomes still before sending the new frame, as a list of pixel that changed.

[siliconwitch]

This is already possible using the pixel draw command frame.display.bitmap(). API info coming soon