Added int to StaticTypeMapper

[lulco]

I've got this error

In StaticTypeMapper.php line 543:
                                                                                
  [Rector\Exception\NotImplementedException]                                    
  Rector\NodeTypeResolver\StaticTypeMapper::mapStringToPhpParserNode for "int"

when applying rule:

Rector\Rector\Typehint\ParentTypehintedArgumentRector:
    Nette\Forms\Container:
        addSelect:
            $size: 'int'

[TomasVotruba]

Thanks