- added GGA

- print messages as dict

network_backend.py

@@ -9,6 +9,7 @@ from a_backend import ABackend
 from nmea.GLL import Gll
 from nmea.GSA import Gsa
 from nmea.GSV import Gsv
+from nmea.GGA import Gga
 
 class NetworkBackend(ABackend):
 	def __init__(self, servers: list[dict]):
@@ -93,7 +94,8 @@ if __name__ == "__main__":
 		rx_list = [
 			Gll(grm, '--'),
 			Gsa(grm, '--'),
-			Gsv(grm, '--')
+			Gsv(grm, '--'),
+			Gga(grm, '--')
 		]
 		# Topology
 		# Receiver-0.0 \