refactor: use nuxt compatiable 4 folder

app/types/cookbook.ts

@@ -0,0 +1,22 @@
+import type { Recipes } from './recipe'
+
+export interface Cookbook {
+  /**
+   * 菜谱 ID，自定义，唯一标识符
+   */
+  id: string
+  cover?: string
+  /**
+   * 菜谱名称
+   */
+  title: string
+  description: string
+  author: string | string[]
+  /**
+   * 菜谱
+   */
+  recipes: Recipes
+
+  createdAt: string
+  updatedAt: string
+}