[Feature Request]: Support `MapName` attributes in spatie/laravel-data autocompletions

[oli-laban]

Feature Description

Laravel Data allows mapping property names using the following attributes:

• #[MapInputName(...)] - Instantiating from an array
• #[MapOutputName()...] - Transforming to an array
• #[MapName(...)] - Both

You can pass a built in mapper:

• SnakeCaseMapper::class
• CamelCaseMapper::class
• SnakeCaseMapper::class
• StudlyCaseMapper::class
• UpperCaseMapper::class
• LowerCaseMapper::class

... or provide a string e.g. #[MapName('my_property')].

The attributes can be used at a class- or property-level.

---

It would be nice to see these reflected in autocompletions. Currently, autocompletions are only provided for the properties as defined on the class, for example:

#[MapName(SnakeCaseMapper::class)]
class UserDto extends Data
{
    public function __construct(
        #[MapName('email_address')] public string $username,
        public string $phoneNumber,
    ) {}
}

UserDto::from([
    'email_address' => 'test@example.com', // No autocomplete
    'phone_number' => 01234567890, // Autocompletes to "phoneNumber" when typing "phone"
]);

[gorbunov]

Thank you for taking the time to share your request!
I've added it into internal feature tracker.