JSON Field Type

[jmikrut]

We should build a JSON field type that comes with a JSON editor. Stores any type of arbitrary JSON in the database.

Marking as planned and logging here for visibility.

Implementation notes:

• Identify existing field type to use as a reference while building out the JSON field type, i.e. the code field
• Take an inventory of all the places the code field is referenced/used
• Stub out a new field type that replicates the code field
• To store the actual JSON, the schema type needs to be Schema.Types.Mixed

[DanRibbens]

Relevant link: #684