优化会话列表，添加用户在线状态

src/main/java/com/bao/dating/pojo/vo/ChatSessionsVO.java

@@ -29,4 +29,6 @@ public class ChatSessionsVO {
     private Integer topStatus;
     /** 免打扰状态 */
     private Integer muteStatus;
+    /** 会话状态 */
+    private Boolean online;
 }

src/main/java/com/bao/dating/pojo/vo/UserInfoVO.java

@@ -26,4 +26,5 @@ public class UserInfoVO implements Serializable {
     private LocalDateTime createdAt;
     private Double latitude;
     private Double longitude;
+    private Boolean online;
 }

src/main/java/com/bao/dating/service/impl/ChatServiceImpl.java

@@ -236,6 +236,7 @@ public class ChatServiceImpl implements ChatService {
                 vo.setSessionName("用户" + session.getTargetUserId());
                 vo.setAvatarUrl(null);
             }
+            vo.setOnline(userService.isUserOnline(currentUserId));
             return vo;
         }).collect(Collectors.toList());
     }