S3 Upload use an endpoint

Hello,

After AWS infrastructure modification, S3Upload@1 tasks on Azure DevOps stopped to work for us.

We discovered a simple workaround, is to use S3 endpoint.

The CLI support S3 endpoint:
`aws s3 cp ./local_file s3://bucket_name/destination_folder --endpoint-url https://bucket-endpoint.eu-central-1.amazonaws.com`

It is possible to transmit into S3Upload@1 task also the S3 endpoint, without switching S3 tasks to cli tasks?

Start by locating the S3Upload@1 task entry point and how it constructs the upload command or client configuration. Compare its options with the documented --endpoint-url behavior; done means the task accepts an S3 endpoint and uploads successfully without switching to a CLI task.

Written by the indexing model from the issue text.