[FEATURE] Is it possible to add a base_model option?

[HonQii]

All of my server's return structures are

Result {
  final int? code; final String?
  final DataType? data; final String?
  final String? msg;
 }

So I want all generated Models to inherit from some abstract so that I can easily access the code and msg attributes in order to handle error messages consistently.

Describe the solution you'd like
I want to be able to pass in a path in build.yaml via base_model, e.g. lib/template/base_model.dart. base_model.dart defines a class of the same name

abstract class BaseModel {
  int? code;
  String? msg;
}

Then all generated Models inherit from this class, so I can process all request results uniformly regardless of their type!