add 聊天室消息增加时间戳

nb-im/src/main/java/com/nb/im/entity/ImMsgEntity.java

@@ -58,6 +58,9 @@ public class ImMsgEntity extends GenericEntity<String> {
     @ApiModelProperty("发送人昵称")
     private String senderNickname;
 
+    @ApiModelProperty("客户端发送时间戳")
+    private Long sendTimestamp;
+
     @ApiModelProperty("是否为系统消息")
     private boolean sys;
 

nb-im/src/main/java/com/nb/im/ws/PubMsgInfo.java

@@ -55,6 +55,9 @@ public class PubMsgInfo implements Serializable {
     @ApiModelProperty("扩展字段")
     private String extend;
 
+    @ApiModelProperty("客户端发送时间戳")
+    private Long sendTimestamp;
+
     @ApiModelProperty("操作类型")
     private MsgEnum operationType;