feat: jetstream partitioned consumer groups#20
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Important
needs support for priority groups in nats-py, see nats-io/nats.py#784
implemented in nats-io/nats.py#786 – this PR depends on that branch
port of partitioned consumer groups from orbit.go
pull consumer priority groups were added in ADR-42, they allow for partitioning of consumers into "consumer groups" with pinning to ensure ordered consumption within a partition without having to consume the entire stream sequentially.
e.g. in event sourcing you normally want to consume events sequentially within an aggregate, but can safely process multiple aggregates concurrently
todo: