feat: add amqp binding 0.4.0

[timonback]

Description

In Java Spring applications, it is possible to define an application that connects to an amqp broker, defines exchanges, queues and listens to incoming message on these queues.

My current understanding of amqp:

1. A publisher connects to a broker
2. The publisher sends a message with a routing key to an exchange
3. The broker matches the message's routing key with the routing patterns of the defined exchanges and forwards the message to those queues.
4. (Bindings are used to connect an exchange with a queue, which do have a n-to-m mapping)
5. The consumer receives message from the queue

In AsyncAPI, the amqp binding supports two types of channels: routingKey (which is an exchange) and queue. Unfortunately, there is no link between the two.

Proposal: Add (optional) fields:

1. name to specify the actual routing pattern used (in the (topic) exchange or amqp binding)
2. channel.$ref to connect the is=routingKey channel type to the is=queue channel type.

I am looking forward to your thoughts. Please let me know, if there are also tests that need to be updated and/or the amqp v0.4.0 needs to be mentioned somewhere to get bundled.

Example:

asyncapi: 3.0.0
info:
  title: Springwolf example project - AMQP
  version: 1.0.0
  description: Springwolf example project to demonstrate springwolfs abilities
defaultContentType: application/json
servers:
  amqp-server:
    host: amqp:5672
    protocol: amqp
channels:
  queue-update-id_#_CRUD-topic-exchange-1-id:
    address: CRUD-topic-exchange-1
    messages:
      java.lang.String:
        $ref: "#/components/messages/java.lang.String"
    bindings:
      amqp:
        is: routingKey
        name: queue-update-id
        channel:
          $ref: #/components/channels/queue-update_id
        exchange:
          name: CRUD-topic-exchange-1
          type: topic
          durable: true
          autoDelete: false
          vhost: /
        bindingVersion: 0.3.0
  queue-update_id:
    address: queue-update
    bindings:
      amqp:
        is: queue
        queue:
          name: queue-update
          durable: false
          exclusive: false
          autoDelete: false
          vhost: /
        bindingVersion: 0.3.0
components:
  schemas:
    SpringRabbitListenerDefaultHeaders:
      type: object
      properties: {}
      examples:
        - {}
    java.lang.String:
      title: String
      type: string
      examples:
        - '"string"'
  messages:
    java.lang.String:
      headers:
        $ref: "#/components/schemas/SpringRabbitListenerDefaultHeaders"
      payload:
        schemaFormat: application/vnd.aai.asyncapi+json;version=3.0.0
        schema:
          $ref: "#/components/schemas/java.lang.String"
      name: java.lang.String
      title: String
      bindings:
        amqp:
          bindingVersion: 0.3.0
operations:
  queue-update-id_#_CRUD-topic-exchange-1-id_receive_bindingsUpdate:
    action: receive
    channel:
      $ref: "#/channels/queue-update-id_#_CRUD-topic-exchange-1-id"
    bindings:
      amqp:
        expiration: 0
        bindingVersion: 0.3.0
    messages:
      - $ref: "#/channels/queue-update-id_#_CRUD-topic-exchange-1-id/messages/java.lang.String"

(Original PR: https://github.com/asyncapi/bindings/pull/259)