Add support to change BY_START_SEQUENCE

[klayders]

When Consumer was created in jetstream, I need to change SEQUENCE position in my cosumer

[pricelessrabbit]

do you mean that you want to edit the start sequence of a consumer after the consumer creation? so for example:

• you have your consumer start on seq number 10
• you consume messages from 10 to 15
• you want to "reset" the consumer to redeliver messages from seq 10

In this case imho you have to re-create the consumer from scratch, because nats server has no support for a "consumer reset" (see https://github.com/nats-io/nats-server/issues/4121). In fact, in consumer config the OptStartSeq is not editable.

[klayders]

sorry, thanks