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.

從 aws-replicator 擴充功能中現有的小型 YAML 範例開始，檢視其設定目前是如何表示的。清楚記錄可用的設定，或提供一個 schema，其中包括 issue 中的 SQS 轉送範例；當使用者擁有用於自訂該擴充功能的完整參考資料時，即表示完成。