Hello!

This pull request introduces a new attribute, #[UseEloquentBuilder], defined in Illuminate\Database\Eloquent\Attributes, to simplify the registration of custom Eloquent Query Builders for models in Laravel.

Currently, to use a custom query builder, you need to override the newEloquentBuilder method in your model, like this:

class MyModel extends Model
{
    // ...
    public function newEloquentBuilder($query)
    {
        return new CustomBuilder($query);
    }
}

With this new attribute, we can achieve the same result more elegantly:

#[UseEloquentBuilder(CustomBuilder::class)]
class MyModel extends Model
{
    // ...
}