Description
OptionConfigurator would have new method checkConstraints(Constraint[] $constraints). User can set validation constraints that will be checked by OptionResolver.
Similar like form fields can have constraints.
In OptionsResolver would be new method addConstraints(string $option, Constraint[] $constraints) and resolve() would be created Validator a validate all options.

Example

$resolver = new OptionsResolver();
$resolver->define('email')
    ->required()
    ->allowedTypes('string')
    ->checkConstraints([
        new Assert\NotBlank(),
        new Assert\Email(),
    ]);

$resolver->resolve(['email' => 'invalidEmail']);
// resolve would throw InvalidOptionsException with ConstraintViolationListInterface