Have layout react to pin layout field in HardwareDescription

RPi pins alternate 1 on left, 2 on right and so on, so 40 is bottom left
Pico physical pins could 1-20 down left side, then 21-40 UP right side, with 40 top right

Thus, for the board layout to be correct, we need to do it differently for RPi and Pico.

We should send the layout as a field in HardwareDescription and then change the layout view to do one way or the other.