feat(rabbitmq): add support for persistent messages

[abumostafa]

Adds an optional persistent flag when publishing messages to RabbitMQ.

When enabled, messages are published with deliveryMode = 2, allowing them to survive broker restarts when used with durable queues. This is essential for reliable delivery and outbox-style patterns, while remaining fully backward-compatible.

How to use it

await this.messageBus.dispatch(
  new RoutingMessage(
    envelope,
    eventKey,
    new AmqpMessageOptions(undefined, undefined, undefined, undefined, undefined, true)
  )
)

[Sebastian-Iwanczyszyn]

Hey, thanks for PR. Please fix the CI I will test it locally also and w can merge it :)

@abumostafa