add 增加聊天室创建时间

nb-im/src/main/java/com/nb/im/service/dto/ImRoomResult.java

@@ -72,4 +72,7 @@ public class ImRoomResult implements Serializable {
 
     @ApiModelProperty(value = "医生id")
     private String doctorId;
+
+    @ApiModelProperty(value = "创建时间")
+    private Date createTime;
 }