Setters for all generated models, like pre-v1.0 allowed


Before v1.0, we were able to initialize any generated model directly using the default initializer (e.g., from a struct).
Now, some models are now generated as SelectionSets and the properties have no setters and the provided initializers are verbose and ugly; Unlike the InputObject type where it provides setters for each property, making it easy to manually construct the models.

How can we generate setters for every generated model?