Implement RadxMars 2.5.1 Mappings HL7v2.5.1 -> FHIR -> HL7v2.5.1

[arnejduranovic]

User Story

As a report stream sender, I would like my RadxMars OTC compliant message to be processed through the pipeline losslessly so that receivers receive all the data I submitted

Description/Use Case

Implement mappings for RadxMars OTC:

• HL7v2 RadxMars OTC -> FHIR
• FHIR -> HL7v2 RadxMars OTC

See RadxMars software requirements document section: II. Translation support

Note: This ticket should NOT do anything related to de-identification

Risks/Impacts/Considerations

Dev Notes

• Step one is to create a test that verifies the UP can process a maximally configured RadxMars message, meaning it can translate RadxMars 2.5.1 -> FHIR -> RadxMars 2.5.1 without losing any data.
• IF NEEDED: Step two is to update the catchall mappings so that the above test passes

Acceptance Criteria

• [ ] RADxMARS OTC 2.5.1 message can be translated to and from FHIR without losing data
• [ ] Test created to confirm this functionality

[Andrey-Glazkv]

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