feat: Implement menu item and category management with Redis caching for restaurant data.

src/category/dto/category.dto.ts

@@ -1,4 +1,5 @@
 import { MenuItemDto } from "src/item/dto/menu-item.dto";
+import { RestaurantDto } from "src/restaurant/dto/restaurant.dto";
 
 export class CategoryDto {
   id: string;
@@ -6,6 +7,7 @@ export class CategoryDto {
   image: string;
   restaurantId: string;
   items?: MenuItemDto[];
+  restaurant?: RestaurantDto;
 
   static fromEntity(entity: any): CategoryDto {
     return {
@@ -14,6 +16,7 @@ export class CategoryDto {
       image: entity.image,
       restaurantId: entity.restaurantId,
       items: entity.items?.map(MenuItemDto.fromEntity) ?? [],
+      restaurant: entity.restaurant ? RestaurantDto.fromEntity(entity.restaurant) : undefined,
     };
   }
 }