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/sammo/API/Message/SendMessage.php

@@ -185,6 +185,7 @@ class SendMessage extends \sammo\BaseAPI
     if ($mailbox === Message::MAILBOX_PUBLIC) {
       $msgID = $this->genPublicMessage($src, $text)->send();
       return [
+        'msgType' => 'public',
         'msgID' => $msgID
       ];
     }
@@ -201,6 +202,7 @@ class SendMessage extends \sammo\BaseAPI
       if ($destNationID === $nationID) {
         $msgID = $this->genNationalMessage($src, $text)->send();
         return [
+          'msgType' => 'national',
           'msgID' => $msgID
         ];
       }
@@ -211,6 +213,7 @@ class SendMessage extends \sammo\BaseAPI
       }
       $msgID = $msgObjOrError->send();
       return [
+        'msgType' => 'diplomacy',
         'msgID' => $msgID
       ];
     }
@@ -231,6 +234,7 @@ class SendMessage extends \sammo\BaseAPI
       $msgID = $msgObjOrError->send();
 
       return [
+        'msgType' => 'private',
         'msgID' => $msgID
       ];
     }