feat: add RMQ channels options, support for prefix for routing_key, a…

[Lancetnik]

Description

1. Feature: Add from faststream.rabbit.annotations import Connection, Channel shortcuts

2. Bugfix: RabbitMQ RabbitRouter prefix now affects to queue routing key as well

3. Feature (close Feature: public API to add middlewares #1402): add broker.add_middleware public API to append a middleware to already created broker

4. Feature: add RabbitBroker(channel_number: int, publisher_confirms: bool, on_return_raises: bool) options to setup channel settings

5. Featur (close Feature: need in receiving headers of certain kafka messages in batch subscription mode #1447): add StreamMessage.batch_headers attribute to provide with access to whole batch messages headers

Type of change

Please delete options that are not relevant.

• Documentation (typos, code examples, or any documentation updates)
• Bug fix (a non-breaking change that resolves an issue)
• New feature (a non-breaking change that adds functionality)
• Breaking change (a fix or feature that would disrupt existing functionality)
• This change requires a documentation update

Checklist

• My code adheres to the style guidelines of this project (scripts/lint.sh shows no errors)
• I have conducted a self-review of my own code
• I have made the necessary changes to the documentation
• My changes do not generate any new warnings
• I have added tests to validate the effectiveness of my fix or the functionality of my new feature
• Both new and existing unit tests pass successfully on my local environment by running scripts/test-cov.sh
• I have ensured that static analysis tests are passing by running scripts/static-anaylysis.sh
• I have included code examples to illustrate the modifications