Use Typescript definitions generated from JSON schema

[edsilv]

When there is a json schema for IIIF Presentation 3, generate a TS definition file from it using https://github.com/bcherny/json-schema-to-typescript and use that to type the various pieces of boilerplate json.

[glenrobson]

For info there is one here now:

https://github.com/IIIF/presentation-validator/blob/main/schema/iiif_3_0.json