Node-RED AMQP Ack/Prefetch Nodes

The `node-red-contrib-amqp-ack` package provides Node-RED users with robust input and output nodes for interacting with AMQP message brokers like RabbitMQ. Its core functionality includes subscribing to (input) and publishing to (output) AMQP exchanges or queues, with explicit support for message acknowledgment and prefetch count control, ensuring more reliable message processing within Node-RED flows. The package, currently at stable version 1.1.2, has a slow release cadence for new features, with the last significant update dating back four years. A key differentiator is its focus on reliable message delivery through configurable ack and prefetch mechanisms, which are crucial for preventing message loss or excessive load on Node-RED instances. It bundles the `amqp-ts` library for underlying AMQP connectivity, which itself is built upon `amqplib`. However, the `amqp-ts` dependency is largely unmaintained, presenting significant compatibility issues with modern Node.js versions.