[LLC] Create RequestFailedException from Response

[annelo-msft]

Add the ability to create a new RequestFailedException from response to Azure.Core.Experimental:

Our overarching goal (per #23372) is to implement this API:

        public static implicit operator Pet(Response response)
        {
            if (response.IsError)
            {
                throw new RequestFailedException(response);
            }

            return DeserializePet(JsonDocument.Parse(response.Content.ToMemory()));

However, at the moment, we will keep this work in Experimental, which means it will need to be modified as follows:

        public static implicit operator Pet(Response response)
        {
            if (response.IsError())
            {
                throw response.CreateRequestFailedException();
            }

            return DeserializePet(JsonDocument.Parse(response.Content.ToMemory()));
        }

This PR adds the CreateRequestFailedException() method to Response.

Addresses: #23372

[azure-sdk]

API changes have been detected in this PR. You can review API changes here

API changes

+         public static RequestFailedException CreateRequestFailedException(this Response response);

[azure-sdk]

API changes have been detected in this PR. You can review API changes here

API changes

+         public static RequestFailedException CreateRequestFailedException(this Response response);