Allow changing status code of HTTP->HTTPS redirect

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**Tell us about your request**
I want to be able to set status code of http to https redirect response to `308 Permanent Redirect` - currently AppRunner handles this redirection by sending `301 Moved Permanently`.

In my case, where I host REST API using AppRunner without custom domain assigned, some of the clients use HTTP clients that on receiving `301 Moved Permanently` status code change request method to `GET` as mentioned in [RFC9110](https://www.rfc-editor.org/rfc/rfc9110#name-301-moved-permanently). When given endpoint accepts only `POST` requests, it causes confusion for the client's operator that must be resolved by manually contacting them and informing about the need to use https endpoints explicitly.

Status code `308 Permanent Redirect` does not allow changing method to `GET` and using it would solve my issue. However, taking in account that this status code was introduced relatively recently and using it by default may cause unexpected behaviour for some clients, I suggest that if this feature were to be introduced, it should be an optional choice.

**Describe alternatives you've considered**
It could be possible to use Lambda@Edge to handle custom redirection, but it involves additional complexity and costs.

**Additional context**
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