调整admin下的类库代码，将主要逻辑调整到extend下

extend/base/admin/model/SystemQuickClass.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace base\admin\model;
+
+use app\common\model\TimeModel;
+
+class SystemQuickClass extends TimeModel
+{
+    protected $deleteTime = 'delete_time';
+
+    public static $autoCache = [
+        [
+            'name' => 'welcome_list',
+        ],
+    ];
+}