聊天上传图片压缩，新增返回原图接口2

app/common/controller/Upload.php

@@ -7,6 +7,7 @@ namespace app\common\controller;
 
 use app\BaseController;
 use app\enterprise\model\{File as FileModel,Message,User,Emoji};
+use app\manage\model\{Config};
 use think\facade\Filesystem;
 use think\facade\Request;
 use think\File;