Add feature from nats 2.11

[Flosckow]

Proposed change

Need add new feature from 2.11 version

Use case

In Faststream we need to add support nats 2.11, but nats-py does not provide support

Contribution

Yeap, I can take this on, but I'm going to need a little help with some issues.

[Flosckow]

Consumer pause implemented in #542