Refactor LoRa protocol to batch+ack with ACK-based time bootstrap

include/data_model.h

@@ -6,19 +6,16 @@ enum class FaultType : uint8_t {
   None = 0,
   MeterRead = 1,
   Decode = 2,
-  LoraTx = 3,
-  TimeSync = 4
+  LoraTx = 3
 };
 
 enum class RxRejectReason : uint8_t {
   None = 0,
   CrcFail = 1,
-  BadProtocol = 2,
-  WrongRole = 3,
-  WrongPayloadType = 4,
-  LengthMismatch = 5,
-  DeviceIdMismatch = 6,
-  BatchIdMismatch = 7
+  InvalidMsgKind = 2,
+  LengthMismatch = 3,
+  DeviceIdMismatch = 4,
+  BatchIdMismatch = 5
 };
 
 struct FaultCounters {