Remove usages of deprecated LocalStack code features in AWS replicator

Currently, the AWS Replicator extension is using some parts of the LocalStack codebase which is deprecated and about to be removed:

• localstack.utils.server.http2_server.run_server which is based on Quart (which has been superseded by the underlying hypercorn quite some time ago).
• localstack.aws.api.HttpRequest which should be replaced with localstack.http.Request.

These usages are currently blocking the following PRs in localstack/localstack:

• https://github.com/localstack/localstack/pull/9754
• https://github.com/localstack/localstack/pull/9757

It would be best to refactor the AWS Replicator Extension such that it spawns the Auth Proxy a new Gateway (and migrate the logic to a implement a LocalStack handlerchain handler).
/cc @lukqw @whummer @thrau

首先定位 AWS Replicator 对 localstack.utils.server.http2_server.run_server 和 localstack.aws.api.HttpRequest 的使用位置，然后查看链接的 localstack PR，以了解兼容性背景。完成的标准是移除这些已弃用的用法，并将 Auth Proxy 迁移到 Gateway 和 LocalStack handlerchain handler。