docs: update documentations for 2.22 (#537)

Signed-off-by: Ryan Wang <i@ryanc.cc>

versioned_docs/version-2.22/developer-guide/theme/finder-apis/menu.md

@@ -0,0 +1,87 @@
+---
+title: 导航菜单
+description: 导航菜单 - MenuFinder
+---
+
+import MenuItemVo from "../vo/_MenuItemVo.md"
+import MenuVo from "../vo/_MenuVo.md"
+
+## getByName(name)
+
+```js
+menuFinder.getByName(name)
+```
+
+### 描述
+
+根据 `metadata.name` 获取菜单。
+
+### 参数
+
+1. `name:string` - 菜单的唯一标识 `metadata.name`。
+
+### 返回值
+
+[#MenuVo](#menuvo)
+
+### 示例
+
+```html
+<div th:with="menu = ${menuFinder.getByName('menu-foo')}">
+  <ul th:with="menuItems = ${menu.menuItems}">
+    <li th:each="menuItem : ${menuItems}">
+      <a
+        th:href="@{${menuItem.status.href}}"
+        th:text="${menuItem.status.displayName}"
+        th:target="${menuItem.spec.target?.value}"
+      >
+      </a>
+    </li>
+  </ul>
+</div>
+```
+
+## getPrimary()
+
+```js
+menuFinder.getPrimary()
+```
+
+### 描述
+
+获取主菜单。
+
+### 参数
+
+无
+
+### 返回值
+
+[#MenuVo](#menuvo)
+
+### 示例
+
+```html
+<div th:with="menu = ${menuFinder.getPrimary()}">
+  <ul th:with="menuItems = ${menu.menuItems}">
+    <li th:each="menuItem : ${menuItems}">
+      <a
+        th:href="@{${menuItem.status.href}}"
+        th:text="${menuItem.status.displayName}"
+        th:target="${menuItem.spec.target?.value}"
+      >
+      </a>
+    </li>
+  </ul>
+</div>
+```
+
+## 类型定义
+
+### MenuVo
+
+<MenuVo />
+
+### MenuItemVo
+
+<MenuItemVo />