[micromanage] schemas should use JSON Schema

I think it probably makes sense to use JSON schemas as the schema format for entities in micromanage. There's a few action items there:

[ ] Implement JSON schema backed entity creation
[ ] Explore existing DSLs for JSON schemas (though I don't want to commit to one yet, raw JSON schema is fine for now)
[ ] Explore fake data generation using JSON schemas
[ ] Explore React form generation using JSON schemas
[ ] Explore documentation generation using JSON schemas.

vigetlabs / microcosm