fix: include movies in category

backend/src/api/categories/categories.service.ts

@@ -18,7 +18,11 @@ export class CategoriesService {
   }
 
   async findAll(): Promise<Category[]> {
-    return await this.prisma.category.findMany();
+    return await this.prisma.category.findMany({
+      include: {
+        movies: true,
+      }
+    });
   }
 
   async findOne(id: string): Promise<Category> {