feat：增加数据接收时间

iot-machine-data-event/src/main/java/com/qniao/iot/machine/event/MachineIotDataReceivedEvent.java

@@ -68,7 +68,12 @@ public class MachineIotDataReceivedEvent implements Serializable {
     private Integer igStat;
 
     /**
-     * 数据采样时间
+     * 数据实际采样时间
      */
     private Long reportTime;
+
+    /**
+     * 实际接收到数据的时间
+     */
+    private Long receivedTime;
 }