Convert over to "official" rabbitmq library

[SteelPhase]

What would you like?

the RabbitMQ team has pulled in https://github.com/streadway/amqp into https://github.com/rabbitmq/amqp091-go

You can see the conversation here

[sagikazarmark]

My gut tells me that it should probably be a new transport outside of the core repository, but I'm a bit hesitant to be honest: Go kit is going to face a large refactor once generics is released and I'm not sure starting to decompose the core repository before that is a good idea.

In any case, you can always release a transport with the new library under your name and Go kit can link to it from the README. I'd say that's the best way to start this anyway.