feat: add TipoEvento entity and related functionality

- Introduced TipoEvento entity with enum for event types.
- Created DTOs for creating and updating TipoEvento.
- Implemented TipoEvento service with methods for CRUD operations and seeding initial data.
- Added TipoEvento controller for handling HTTP requests related to event types.
- Integrated TipoEvento into the main application module.
- Updated Evento entity to include a relationship with TipoEvento.
- Enhanced ParticipanteEvento service to register attendance using QR tokens.
- Implemented QR token generation and validation for event attendance.
- Updated API documentation for new endpoints and functionalities.
- Adjusted TypeOrm configuration to include new entities.

src/auth/guards/roles.guard.ts

@@ -0,0 +1,46 @@
+import {
+  Injectable,
+  CanActivate,
+  ExecutionContext,
+  ForbiddenException,
+} from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+import { ROLES_KEY } from '../decorators/roles.decorator';
+
+@Injectable()
+export class RolesGuard implements CanActivate {
+  constructor(private reflector: Reflector) {}
+
+  canActivate(context: ExecutionContext): boolean {
+    const requiredRoles = this.reflector.get<string[]>(
+      ROLES_KEY,
+      context.getHandler(),
+    );
+    if (!requiredRoles) return true; // Si no hay roles definidos, permitir acceso.
+
+    const request = context.switchToHttp().getRequest();
+    const user = request.user; // Usuario ya validado en JwtValidationGuard
+
+    if (!user) {
+      throw new ForbiddenException('Usuario no autenticado');
+    }
+
+    // Obtener el tipo de usuario
+    const tipo_usuario = user.tipoUser.tipo;
+
+    if (!tipo_usuario) {
+      throw new ForbiddenException('No se pudo determinar el tipo de usuario');
+    }
+
+    // Validar si el usuario tiene uno de los roles requeridos
+    const hasRole = requiredRoles.includes(tipo_usuario);
+
+    if (!hasRole) {
+      throw new ForbiddenException(
+        'No tienes permisos para acceder a este recurso',
+      );
+    }
+
+    return true;
+  }
+}