Display more channel details with --info arguments

[thebentern]

It would be swell to see some of the channel details that we see over the serial logs, such as actual frequency, with the --info argument. For more context: https://meshtastic.discourse.group/t/antenna-improved-range/227/102?u=thebentern

[geeksville]

This issue has been mentioned on Meshtastic. There might be relevant details there:

https://meshtastic.discourse.group/t/antenna-improved-range/227/105

[mkinney]

@mc-hamster Is the freq exposed in protobufs? I don't see it.

[luzpaz]

Just checking the status of this ticket, is there something left to do here?

[garthvh]

These are details that are not part of the api