Add support for requester pays for S3 buckets

[fourtyplustwo]

Our users often use requester pays mode on S3 buckets. A lot of users requesting access to these buckets get very confused why their access seemingly does not work because they get Access Denied errors. It would be nice if data.all could be told that a dataset could be instructed that it has requester pays mode enabled (same like KMS key in a way) and then the UI when listing S3 commands could know to include the --request-payer flag or to generate some additional notice that this bucket is requester pay enabled and additional headers must be passed to access it.