Please note, that ChirpStack v4 will support this 
Last week I merged this into the master branch. After cloning the TTN lorawan-devices repo, you can import these devices as “device-profile templates”. You can find the v4 draft documentation here: Device-profile templates - ChirpStack open-source LoRaWAN® Network Server documentation.
See also: Help testing ChirpStack v4 (test releases)!.
