Design and implement useRef hook for AST node access

[rafbcampos]

Description

Design and implement a useRef hook that allows content authors to access AST nodes directly. This will provide a way for authors to get references to AST nodes for advanced use cases.

Tasks

• Research optimal approach for exposing AST nodes via refs
• Implement useRef hook that creates mutable ref objects
• Create mechanism to attach refs to AST nodes during compilation
• Determine how refs will be accessed in the generated AST
• Add tests for ref creation and assignment
• Document limitations and use cases for refs in DSL context

Acceptance Criteria:

• useRef creates mutable ref objects
• Refs can be attached to elements via the ref prop
• Refs correctly receive AST node references
• Implementation has test coverage
• Documentation explains how and when to use refs in the DSL