[RFE] tar: handle OCI image layout

[vbatts]

Tar archives are well known for containing files and directories. The OCI Image Layer describes "whiteout" entries that signify the removal of files/directories. These whiteouts are effectively events to delete portions of the the DirectoryHierarchy.

An interesting function that would come from supporting these whiteout files would be, staging a view of what the layered filesystem attributes will be. (i.e. snapshots of the expected mtree directory hierarchy as these set of layers are processed)