Annotate properties with use cases reanalysis and reprocessing and define them

[anngvu]

Data model update for this repo from internal review/strategy meeting. Related to #367. Basically, we should try to justify and be clearer about why something is in data model.

• To make it clear that we are making things required or not based on reanalysis and reprocessing (which are considered separate), data model should encode these via annotation of props with these use cases if they apply. This will allow queries and comparisons with their actual required values to make sure things are aligned.