add max_size parameter

manifest.json

@@ -78,6 +78,15 @@
                 "choices" : ["Daily", "Each 3 days", "Weekly", "Biweekly", "Monthly"],
                 "default" : "Weekly"
             }
+            {
+                "name": "max_size",
+                "type": "select",
+                "ask": {
+                    "en": "Specify the max size of each files backup (soft limit) in Mb. This will try to split the backup by its subdirectories to avoid to have only one big backup.",
+                },
+                "choices" : ["50", "100", "500", "1000", "5000"],
+                "default" : "500"
+            }
         ]
     }
 }