Make all RepositoryDefinition responsibilities part of an interface

• Type: Technical Task
• Status: Closed
• Resolution: Fixed
• Affects Version/s: None
• Fix Version/s: 7.0.0 M3
• Component/s: Document Repository Framework, Documents & Media
• Labels: None
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/22567

The RepositoryDefinition is both a "definition" (registry) of the capabilities of a particular kind of repository, and a factory for instances of that "kind".

Make RepositoryDefinition implement RepositoryFactory so that all responsibilities are reflected in public interfaces.