[WIP] Add controller for Derechohabiente following CQRS pattern

[Copilot]

Implementation Plan for Derechohabiente Controller (CQRS Pattern)

• Analyze existing codebase structure and patterns
• Understand CQRS implementation pattern in the project
• Create derechohabiente controller with CQRS pattern:
  • Query operations (GET - read operations)
  • Command operations (POST/PUT/DELETE - write operations)
• Create routes for derechohabiente endpoints
• Register routes in server.js
• Create Swagger documentation for the new endpoints
• Run tests to ensure no breaking changes

Note: Following the pattern from existing controllers (users, products, orders) where:

• Query operations: get_, list_ functions
• Command operations: save_, update_, delete_* functions

Original prompt

add the controller to "Derechohabiente" follow the CQRS pattern

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