feat(01-04): add metadata entries for 24 new modelcatalog tables

- Add 10 new entity tables: person, model_category, region, process, time_interval, causal_diagram, image, variable_presentation, intervention, grid
- Add 14 new junction tables connecting entities through many-to-many relationships
- All tables have select_permissions for anonymous and user roles with unrestricted read (filter: {})
- Junction tables have bidirectional object_relationships to parent tables
- Entity tables have array_relationships to their junction tables
- Total modelcatalog tables: 36 (12 original + 24 new)

Author: mosoriob