Filter results by existing archives
The first three entries in the results have a question mark that indicate that the records have been harvested. It would be nice if there was a way to search entries and filter by the status of the archives. That would allow to do things:
- Returning all the entries that do not have an archive
- Returning all the entries that are already archived
- Returning all the entries that have been successfully archived (assuming that successful is that the last step of the pipeline was successful)
