[fix/fcnt_encoding] Add frame counters to list devices in ttnctl
[fix/fcnt_encoding] Add frame counters to list devices in ttnctl

jvanmalder/ttn,TheThingsNetwork/ttn,jvanmalder/ttn,LoRaWanSoFa/ttn,mgranberry/ttn,TheThingsNetwork/ttn,LoRaWanSoFa/ttn,jvanmalder/ttn,mgranberry/ttn,mgranberry/ttn,TheThingsNetwork/ttn