Consider exporting a Data Dictionary

Non-FHIR and non-technical audiences have trouble understanding FHIR IGs. Data dictionaries have proven to be a useful format to communicate to non-FHIR experts. We should consider exporting FHIR artifacts into a DD form. This does require a Snapshot, so it might be better downstream of SUSHI, working off complete StructureDefinitions, ValueSets, etc. produced by the IG Publisher.

The DD looks simple on the surface, but there are issues involving nested elements, sliced arrays (including extensions). I don't think these are insurmountable by any means.

This could be a project for a summer intern.

Start by determining how SUSHI could consume complete Snapshot StructureDefinitions, ValueSets, and other FHIR artifacts produced downstream by the IG Publisher. Define the data-dictionary output and verify how it represents nested elements, sliced arrays, and extensions. Done means a usable export for non-FHIR and non-technical audiences.

Written by the indexing model from the issue text.