Support more methods on asynchronous consumer

https://github.com/apache/pulsar-client-python/pull/277 does not implement:
- [x] negative acknowledgment #282
- [ ] message listener (to be decided whether it's needed)
- [ ] redelivery
- [ ] `get_last_message_id`

Start by reviewing PR #277 and the asynchronous consumer implementation, then compare it with the listed gaps: message listener, redelivery, and get_last_message_id; negative acknowledgment references #282. Resolve whether message listeners are required, and consider the work complete when each agreed method is supported and verified.

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