[Feature Request]: Make it possible to copy objects

[Adaephon-GH]

What feature would you like to have in the cli?

It would be nice to be able to perform server-side copies of objects (within and across buckets).

To my understanding sos storage move already does exactly this, but with mandatory deletion of the source after copying was successful.

[natalie-o-perret]

Thanks for the suggestion. This fits naturally with the existing implementation: exo storage copy (cp) can expose the server-side copy operation, while exo storage move (mv) can reuse it and delete the source after a successful copy. Both would support single objects, prefixes, and cross-bucket operations.