refactor(app): 应用图标库归位到 app 模块

图标库接口前缀为 /api/v1/app-icons，与设备模块无关，页面与 API 一并迁到 app-manager/app-icon 和 api/app。

src/views/app-manager/app-icon/index.vue

@@ -234,8 +234,8 @@ import {
 } from "element-plus";
 
 import { usePageTable } from "@/composables";
-import AppIconAPI from "@/api/device/appIcon";
-import type { AppIconQuery, AppIconVO } from "@/api/device/appIcon.types";
+import AppIconAPI from "@/api/app/appIcon";
+import type { AppIconQuery, AppIconVO } from "@/api/app/appIcon.types";
 import { withBase } from "@/utils/asset-url";
 
 defineOptions({