[refactor] Implements handler devStorage
[refactor] Implements handler devStorage

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