feat(streams): support LASTID option for XCLAIM command.

[theyueli]

fixes #1898

 *  * 6. LASTID <id>:
 *      Update the consumer group last ID with the specified ID if the
 *      current last ID is smaller than the provided one.
 *      This is used for replication / AOF, so that when we read from a
 *      consumer group, the XCLAIM that gets propagated to give ownership
 *      to the consumer, is also used in order to update the group current
 *      ID.