packet bit order

[squintz]

Bits are often represented the lowest bit on the right and the higher bits on the left. So 8 - 0 vs 0 - 8. Currently there seems to only be one option for the packet diagram. It would be very useful to be able to set a config parameter to reverse the order or allow the order to be specified in reverse.

packet-beta
0-1: "System Mode"
2: "Rec Flag"
3: "ACK Flag"
4: "GPS PPS Flag"
5-7: "Scan type"

vs

packet-beta
7-5: "Scan type"
4: "GPS PPS Flag"
3: "ACK Flag"
2: "Rec Flag"
1-0: "System Mode"