Define a global variable for upload path directory

Author: afgprogrammer

config.php

@@ -18,6 +18,7 @@
 define('SYSTEM', SCRIPT . 'System/');
 define('CONTROLLERS', SCRIPT . 'Application/Controllers/');
 define('MODELS', SCRIPT . 'Application/Models/');
+define('UPLOAD', SCRIPT . 'Upload/');
 
 // Config Database
 define('DATABASE', [