Migrate to JSON Schema

[multimeric]

• If each unit of serialization is defined as a JSON schema, we can get "free" form generation and validation using https://github.com/rjsf-team/react-jsonschema-form
• Depending on our serialization layer, we can use either https://github.com/fuhrysteve/marshmallow-jsonschema or https://docs.pydantic.dev/latest/usage/schema/ to generate these schemas from Python