초기 커밋: 5130 레거시 시스템

- URL 하드코딩 → .env APP_URL 기반 동적 URL로 변경
- DB 연결 하드코딩 → .env 기반으로 변경
- MySQL strict mode DATE 오류 수정

DBcontrol/vendor/symfony/cache/Adapter/SimpleCacheAdapter.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Cache\Adapter;
+
+@trigger_error(sprintf('The "%s" class is @deprecated since Symfony 4.3, use "Psr16Adapter" instead.', SimpleCacheAdapter::class), \E_USER_DEPRECATED);
+
+/**
+ * @deprecated since Symfony 4.3, use Psr16Adapter instead.
+ */
+class SimpleCacheAdapter extends Psr16Adapter
+{
+}