Modify Status command to return a ConnTypeLabel in addition to the ConnType byte

[john-westcott-iv]

Addresses #423

Includes modification of receptorctl to show the label instead of the status.

[fosterseth]

what if this was a map instead?

connTypeStrings := map[byte] string {ConnTypeDatagram: "DataGram" ... }

then in GetConnectionTypeAsString() we do

conntypestr, ok := connTypeString[conntype]
if !ok {
conntypestr = "unknown"
}

[john-westcott-iv]

I like the idea of the map because then the labels are not dependent on the order of the array.

[shanemcd]

Curious, under which conditions would this happen?

[john-westcott-iv]

If someone added a new connection type constant but forgot to add an entry into the map. I was also thinking of some weird upgrade scenario where a newer version of receptor with a new connection type was introduced to an existing mesh.

[ghjm]

This probably shouldn't go here. This is the struct for the low-level advertisements that get sent around the network, so its size matters. If we want another field in the Status response, we should define another struct that inherits this one and adds the field, and populate it at the time the status is being asked for.