public String getGroupName() {
        return groupName;
    }
Add group online info

@param isOnLine      whether online
@param isFilterCsm   whether filter consume
@param clientId      client id
@param hbTime        last hb time
@param topicName     topic name
@param partitionId   partitionId
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/broker/offset/OffsetHistoryInfo.java