aws-replicator: add meaningful documentation / schema for config yaml

Currently, there are only a few very small examples of how to configure the aws-replicator extension via YAML. This makes it very hard to grok how to properly customise the extension.

It would be incredibly helpful to have something more comprehensive available as a reference.

For instance: Say I have a local SQS queue of dev-sqs-queue and I want to forward all requests to a remote staging-aws-queue - there is no easily available reference for this.

从 aws-replicator 扩展中现有的小型 YAML 示例开始，检查其配置目前是如何表示的。清晰地记录可用的配置，或提供一个 schema，其中包括 issue 中的 SQS 转发示例；当用户拥有用于自定义该扩展的完整参考资料时，即表示完成。