feat: Vue3로 새롭게 작성한 메인 페이지 (#229)

- v_front.php
- API 추가
  - General/GetFrontInfo
  - Global/GetGlobalMenu
- DTO 추가
  - MenuItem, MenuMulti, MenuSplit
- 글로벌 메뉴 출력 방식 변경
  - d_setting/GlobalMenu.php

Reviewed-on: https://storage.hided.net/gitea/devsam/core/pulls/229

hwe/ts/v_front.ts

@@ -0,0 +1,13 @@
+import { createApp } from 'vue'
+import { BootstrapVue3, BToastPlugin } from 'bootstrap-vue-3'
+import { auto500px } from './util/auto500px';
+import { htmlReady } from './util/htmlReady';
+import { insertCustomCSS } from './util/customCSS';
+import PageFront from './PageFront.vue';
+import Multiselect from 'vue-multiselect';
+auto500px();
+
+htmlReady(() => {
+  insertCustomCSS();
+});
+createApp(PageFront).use(BootstrapVue3).use(BToastPlugin).component('v-multiselect', Multiselect).mount('#app');