refactor all base things

src/ZM/InstantApplication.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ZM;
+
+use Exception;
+use ZM\Exception\InitException;
+use ZM\Plugin\InstantPlugin;
+
+class InstantApplication extends InstantPlugin
+{
+    private static $obj;
+
+    /**
+     * @param  null|mixed    $dir
+     * @throws InitException
+     */
+    public function __construct($dir = null)
+    {
+        if (self::$obj !== null) {
+            throw new InitException(zm_internal_errcode('E00069') . 'Initializing another Application is not allowed!');
+        }
+        self::$obj = $this; // 用于标记已经初始化完成
+        parent::__construct($dir ?? __DIR__);
+    }
+
+    /**
+     * @throws Exception
+     */
+    public function run()
+    {
+        (new Framework())->init()->start();
+    }
+}