Add LoRa telemetry, fault counters, and time sync status

include/lora_transport.h

@@ -12,6 +12,8 @@ struct LoraPacket {
   PayloadType payload_type;
   uint8_t payload[LORA_MAX_PAYLOAD];
   size_t payload_len;
+  int16_t rssi_dbm;
+  float snr_db;
 };
 
 void lora_init();