feat: BaseAPI의 launch()에 타입 지정

- APIRecoveryType이 명시

hwe/sammo/API/NationCommand/GetReservedCommand.php

@@ -5,6 +5,7 @@ namespace sammo\API\NationCommand;
 use sammo\Session;
 use DateTimeInterface;
 use sammo\DB;
+use sammo\Enums\APIRecoveryType;
 use sammo\GameConst;
 use sammo\General;
 use sammo\Json;
@@ -29,7 +30,7 @@ class GetReservedCommand extends \sammo\BaseAPI
         return static::REQ_GAME_LOGIN | static::REQ_READ_ONLY;
     }
 
-    public function launch(Session $session, ?DateTimeInterface $modifiedSince, ?string $reqEtag)
+    public function launch(Session $session, ?DateTimeInterface $modifiedSince, ?string $reqEtag): null | string | array | APIRecoveryType
     {
         $db = DB::db();