Generate ingests from Fedora/RDF

[dolsysmith]

• Create mapping from Fedora 4 predicates to Bulkrax metadata for work-level objects
• Verify that files query returns the latest version of every file
• Verify that file<->work relationships are accurate for all cases
• Construct query to return permissions (work & file level)
• Construct query to return embargoes (work & file level)
• Construct query to return collection- and work-level metadata for parent objects of works

[dolsysmith]

• Check FileSet imports: are these creating predicates with empty strings for work-level metadata fields?
• Confirm embargo import behavior: visibility:embargo vs. private/restricted. Does this generate the correct behavior, as compared to creating the embargo in the UI?