feat: 添加PHPMailer依赖并实现邮箱验证功能

- 添加PHPMailer依赖用于发送验证邮件
- 实现开发者邮箱验证功能
- 添加SMTP邮件配置到config.php
- 创建邮箱验证模板文件
- 修改上传应用逻辑要求验证邮箱
- 移除不再使用的SQL文件

vendor/composer/autoload_static.php

@@ -0,0 +1,36 @@
+<?php
+
+// autoload_static.php @generated by Composer
+
+namespace Composer\Autoload;
+
+class ComposerStaticInit3302f48816527bd1881a87ec350e6e66
+{
+    public static $prefixLengthsPsr4 = array (
+        'P' => 
+        array (
+            'PHPMailer\\PHPMailer\\' => 20,
+        ),
+    );
+
+    public static $prefixDirsPsr4 = array (
+        'PHPMailer\\PHPMailer\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/phpmailer/phpmailer/src',
+        ),
+    );
+
+    public static $classMap = array (
+        'Composer\\InstalledVersions' => __DIR__ . '/..' . '/composer/InstalledVersions.php',
+    );
+
+    public static function getInitializer(ClassLoader $loader)
+    {
+        return \Closure::bind(function () use ($loader) {
+            $loader->prefixLengthsPsr4 = ComposerStaticInit3302f48816527bd1881a87ec350e6e66::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInit3302f48816527bd1881a87ec350e6e66::$prefixDirsPsr4;
+            $loader->classMap = ComposerStaticInit3302f48816527bd1881a87ec350e6e66::$classMap;
+
+        }, null, ClassLoader::class);
+    }
+}