add cursor

.cursor/rules/nestjs-module-structure-guidelines.mdc

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+---
+description: Prescribes the structure and components within NestJS modules, including controllers, models, DTOs, and services, ensuring API encapsulation.
+globs: src/modules/**/*.*
+---
+- One module per main domain/route.
+- One controller for its route.
+- And other controllers for secondary routes.
+- A models folder with data types.
+- DTOs validated with class-validator for inputs.
+- Declare simple types for outputs.
+- A services module with business logic and persistence.
+- One service per entity.