[Feature]: Support for custom casting

[Catlike14]

What happened?

I’m using spatie/laravel-model-states, but the cast for the state field is not handled properly. Every time I regenerate my types, I have to manually re-add the type string for every field that it is a state. It would be helpful to support this library, ideally by defining a type with all possible state values instead of a generic string. Alternatively, having a way to implement custom type definitions would solve the issue.

Another improvement could be to set undeterminable types as any, logging a warning in the console. This would help prevent syntax errors that currently require manual fixes (e.g., for git hooks).

How to reproduce the bug

After running php artisan typescriptable the field is empty, causing a syntax error:

export interface MyModel {
    id: number
    state:
    created_at?: string
    updated_at?: string
}

Package Version

3.1

PHP Version

8.4

Which operating systems does with happen with?

No response

Notes

No response

[Catlike14]

The same problem happens when casting as collection:

    protected $casts = [
        'test' => \Illuminate\Database\Eloquent\Casts\AsCollection::class,
    ];

[Catlike14]

I opened PR #97 which handles AsCollection and also fixes the fallback to any for unknown classes.