To use the `packages_nuget_new_package_file_updater` flag which controls
how the package file is updated and how the underlying file in object
storage is moved.

With the feature flag disabled: the file is downloaded (multiple times)
to get re-uploaded. This doesn't work well with package files linked to
a heavy file on object storage.
With the feature flag enabled: the file is simply moved in object
storage (copy command followed by destroy command), thus avoiding
downloading and uploading the actual file.

This commit introduces a new service to handle this file move in object
storage.

Rollout issue: #336511

Changelog: fixed