Add typealias for SmithyHTTPAPI.HTTPRequest

[shepazon]

Describe the feature

When presigning part upload requests, the response is currently SmithyHTTPAPI.HTTPRequest?. This should be made into something that SDK users can use without having to import SmithyHTTPAPI directly.

Use Case

When presigning requests to upload parts during multipart uploads.

Proposed Solution

Ideally this would be a standard URLRequest but if that's not feasible, then adding something like AWSSDKHTTPRequest as a typealias would do the job.

Other Information

No response

Acknowledgements

• [ ] I may be able to implement this feature request
• [ ] This feature might incur a breaking change

[shepazon]

Never mind. I missed the S3Client.presignedRequestForUploadPart() function.