feat(connectors): Implement RabbitMQ / AMQP source & sink

### Description

As part of the connector ecosystem roadmap: [#2753](https://github.com/apache/iggy/issues/2753) I want to add the RabbitMQ connector source + sink

### Affected area / component

Connectors

### Proposed solution

Add a native Rust source & sink connector for RabbitMQ (AMQP 0.9.1), enabling Iggy streams to publish messages to RabbitMQ exchanges (sink) and consume messages from RabbitMQ queues into Iggy streams (source).

### Alternatives considered

_No response_

### Contribution

- [x] I'm willing to submit a pull request to implement this feature

### Good first issue

- [ ] I think this could be a good first issue for a new contributor

Start by reading the connector ecosystem roadmap in issue #2753 and surveying the existing Connectors area for source and sink patterns. Done means providing native Rust RabbitMQ/AMQP 0.9.1 connectors that publish Iggy streams to exchanges and consume RabbitMQ queues into Iggy streams.

Written by the indexing model from the issue text.