Fix type in valid_image_mimetypes and executive method of /vender/bin/debug

Author: bluehaha2

bin/debug

@@ -1,4 +1,4 @@
-#!/usr/bin/php
+#!/usr/bin/env php
 <?php
 
 /*

src/config/lfm.php

@@ -88,7 +88,8 @@
         'image/jpeg',
         'image/pjpeg',
         'image/png',
-        'image/gif'
+        'image/gif',
+        'image/svg+xml',
     ],
 
     // available since v1.3.0
@@ -98,9 +99,9 @@
         'image/pjpeg',
         'image/png',
         'image/gif',
+        'image/svg+xml',
         'application/pdf',
         'text/plain',
-        'image/svg+xml',
     ],
 
     /*