Custom Typescript type for ScalarType

[hbriese]

Idea

Allow for custom typescript types to be used for scalars.
Scalars often have additional constraints, however this isn't reflected on the type level when interacting with them

Example ScalarType

scalar type Address extending str {
   some constraints
}

Generates

export type $Address = $.ScalarType<"std::str", string>;

Ideally we could provide a custom typescript type rather than string (during generation)

export type $Address = $.ScalarType<"std::str", MyCustomType>;

Alternatively the generator could provide some constraints itself. There's likely a better way of doing this, but this is what I mean more concretely

export type $Address = $.ScalarType<"std::str", string & { isAddress: true } >;

[scotttrinh]

This feels similar to branding, for instance, here's Zod's implementation of that. Am I on the right track here with what you're proposing? Can you give some more motivation from the use-case perspective?