jsonschema.Marshal

[eadlam]

Is your feature request related to a problem? Please describe.
When exporting a config, I sometimes need the value of a field to equal the json-schema of another cue type. For example: LLM tool definitions.

Describe the solution you'd like
Similar to json.Marshal, I would like a jsonschema.Marshal that takes a cue definition and outputs json-schema.

Describe alternatives you've considered
Alternatively, I have to maintain json-schema by hand, or do a two-phase build process.

[mvdan]

Do you mean generating jsonschema from CUE? If so, this would be #929.