config file manager

config/packages/artgris_file_manager.yaml

@@ -1,5 +1,8 @@
 artgris_file_manager:
     conf:
-        default:
+        image:
             dir: "../public%app.path_uploads%"
             type: 'image'
+        file:
+            dir: "../public%app.path_uploads%"
+            type: 'file'