API Gateway Stage

This template creates a stage for the `TestDeployment` deployment. The stage specifies the stage name as `Prod` and the description as `Prod Stage`. It also references the `MyRestApi` API, `TestDeployment` deployment, `MyDocumentationVersion` documentation version, and `ClientCertificate` client certificate. The stage includes variables with the value `Prod` for the `Stack` variable. Additionally, it defines method settings for different resource paths and HTTP methods, enabling metrics and disabling data trace. The `/stack` resource path with the `POST` HTTP method has a throttling burst limit of `999`, while the `/stack` resource path with the `GET` HTTP method has a throttling burst limit of `555`.