Add PSR-11 ContainerInterface support / Zend\ServiceManager

[bcremer]

This adds return type detection for Psr\Container\ContainerInterface-style service locators.

$thing = $container->get(\MyApp\MyThing::class);
// $thing is type of \MyApp\MyThing

As discussed a while ago on twitter: https://gist.github.com/Haehnchen/aea3ac2d10cc709227815436de1e2ba2

This is especially useful for ZF3/Zend Expressive style Factories:

use Zend\ServiceManager\Factory\FactoryInterface;
use Psr\Container\ContainerInterface;

class MyObjectFactory implements FactoryInterface
{
    public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
    {
        $dependency = $container->get(stdClass::class);
        return new MyObject($dependency);
    }
}

[Haehnchen]

thx