Allow NTP as an Alternative to GPS for Class B LoRaWAN Beacons

[Mariiian09]

I am using the lora_pkt_fwd.c code, and I noticed that it relies exclusively on GPS to create Class B LoRaWAN beacons. However, my setup does not include a GPS module. Instead, I would like to use NTP (Network Time Protocol) as an alternative to synchronize time and create beacons.

Is it possible to modify the code to support NTP for this purpose? If not, could you provide guidance on implementing such functionality?