feat: retry & delay messages production-ready setup

[Sebastian-Iwanczyszyn]

This PR introduces a production-ready retry and delay mechanism for message processing based on:

• TTL + Dead Letter Exchange (DLX) pattern
• Topic exchange support
• Configurable retry handling
• Safe acknowledgment strategy
• Optional retry limit handling

No RabbitMQ plugins required.

---

Architecture Overview

Flow

Producer
   ↓
main.exchange (topic)
   ↓
main.queue
   ↓ (consumer error)
retry.exchange (topic)
   ↓
retry.queue (TTL)
   ↓ (after TTL)
main.exchange
   ↓
main.queue (re-delivered)

---

🔧 What Was Added

1️⃣ Retry Infrastructure

• retry.exchange (topic/direct/fanout)

• retry.queue with:

  • x-message-ttl
  • x-dead-letter-exchange → main exchange
  • no x-dead-letter-routing-key (preserves original routing key)

[github-actions]

🎉 This PR is included in version 3.4.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀