Adding method validations option

[marcotas]

This method can be optionally used instead of the property validations for better use with custom rules. Example usage:

class CreatePhoneInteraction extends Interaction
{
    public function validations()
    {
        return [
            'phone' => ['required', new MyPhoneRule('BR')],
        ];
    }
}

[zachflower]

This is great, thanks @Marcot89! Would you mind adding a test to validate the new functionality?

[marcodevsquad]

It's done. 😉 👍

[marcodevsquad]

@zachflower where are you? I'm waiting your answer... thanks

[zachflower]

Apologies for the delay @Marcot89, this all looks great! Thank you so much for the contribution!