Enable drawio extension in wiki settings template

Install/Templates/mediawiki/LocalSettings.php

@@ -152,3 +152,6 @@ $wgSessionCacheType = CACHE_DB;
 
 # Add file extensions
 $wgFileExtensions = array('ppt', 'pptx', 'pdf', 'doc', 'docx', 'odt', 'odp', 'xml', 'json');
+
+# Enable extensions
+require_once "$IP/extensions/DrawioEditor/DrawioEditor.php";