Support UploadPartCopy in async-aws/s3

[nmuntyanov]

Hello guys!
I've not found how i can use UploadPartCopy (https://docs.aws.amazon.com/AmazonS3/latest/API/API_UploadPartCopy.html)
functionality in async-aws/s3
Will be nice to have it to be able to copy files more than 5GB

[jderusse]

Hi, Indeed, AsyncAws does not YET support this operation, but you can it by following this documentation https://async-aws.com/contribute/generate.html#creating-a-new-client-operation we'll be happy to review and approve your PR 🤗

[nmuntyanov]

@jderusse may you take a look, please?
#1590

and why this test is failed?
https://github.com/async-aws/aws/actions/runs/6547020143/job/17778665168?pr=1590