Generate TypeScript interface from JSON

An option to generate a corresponding TypeScript interface. We could also support query generation for MySQL JSON types, i.e. generate a path query like this:
```sql
SELECT data->"$.items[2].some.nested.property"
FROM table;
```

No files or tests are named. Start by inspecting the repository's JSON formatting and generation entry points, then clarify whether both TypeScript interface generation and MySQL JSON path-query generation are required; done should include defined output behavior and coverage for the selected feature or features.

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