#145 Follow-Up: Consolidate storage + unpacking to optimize disk usage

[everettraven]

Follow-up item after operator-framework/catalogd#145 is merged

          Any reason not to unpack directly into `storageDir` (ie `/var/cache/catalogs`)? If `UnpackImageRegistryClient=true` and `HTTPServer=true`, why not skip the extra work of communication between the Unpacker and the Storer in the reconciler?

Originally posted by @anik120 in operator-framework/catalogd#145 (comment)