Change Gateway ID in Device Details to Gateway list (selectable)

[kbeaugrand]

Discussed in #1150

^{Originally posted by awesome-ideas[bot] September 1, 2022}
When specifying the Gateway identifier for a LoRaWAN device, it could be better to have an auto-complete select box that will help the user to better change this value.

[kbeaugrand]

The Gateway ID is the device id that is running the LoRaWAN Network server module.

The idea is to create a scheduled job that is in charge to :

• Read existing IoT Edge that are executing LoRaWAN NetworkService
• Store (in memory) the existing gateways

The API controller should query the memory cache..

[hocinehacherouf]

Gateway ID should visible in device create view