add disable customer function

lib/domain/constants.dart

@@ -20,6 +20,8 @@ const rate_doc_id = "rate";
 
 const user_requested_status = "requested";
 const user_invited_status = "invited";
+const user_disabled_status = "disabled";
+const user_joined_status = "joined";
 
 const pkg_files_path = "/packages";