Extract Studio project resources to registries

Phase 1 - Exploration Timebox 3 points 

The resources of a Studio project should be part of its registries, this would allow to reference them from dependent projects.

Use case : When I override a doctype from a project in dependencies, a validation error is displayed because the icon is missing. Same for schemas with a reference to a XSD file.

Todo:

• Update studio extractor, following Studio Modeler pattern
• Append this new created resource registry
• Decorate ResourceServiceImpl to return resources from registry as well (TBD)