Derive File-Accession mappings from AltAccessions - Update for Apollo Epic (GSI-2265)

[TheByronHimes]

This PR updates WPS for changes introduced by Apollo - specifically with regard to research data file IDs and how we map them to externally visible accession numbers.

Old way: consume events that have accession: str, file_id: UUID4.
New way: consume events that have id: str, pid: str, type: str, created: datetime, where pid=accession and id=file_id.

Since Apollo's AltAccessions are published for other kinds of entities beyond the file IDs, we filter out any AltAccession event where the "type" field is not AltAccessionType.FILE_ID

[coveralls]

Pull Request Test Coverage Report for Build 23894365116

Details

• 25 of 25 (100.0%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 86.756%

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Totals
Change from base Build 23435349025:	0.1%
Covered Lines:	845
Relevant Lines:	974

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💛 - Coveralls