add disable customer function

lib/data/services/user_imp.dart

@@ -48,4 +48,9 @@ class UserServiceImp implements UserService {
   Future<void> uploadMsgToken(String token) {
     return userDataProvider.uploadMsgToken(token);
   }
+
+  @override
+  Future<void> enableUser(String userID, bool enabled) {
+    return userDataProvider.enableUser(userID, enabled);
+  }
 }