Add generic type for WithData trait

[konovalexander]

It becomes possible to add PHPDoc when using the "WithData" trait:

class CommentRequest extends FormRequest {

    /** @use WithData<\App\Data\CommentData> */
    use WithData;

    protected string $dataClass = CommentData::class;

    //Some code
}

Then type hinting works correctly after calling the "getData" method:

public function store(CommentRequest $request): JsonResponse {
    
    $commentData = $request->getData();
    //$commentData is now of type CommentData
    
    //Some code
}

[rubenvanassche]

Fancy 😍 , thanks!