fix container extension

Author: ASKozienko

pkg/simple-client/SimpleClientContainerExtension.php

@@ -10,7 +10,9 @@
 use Enqueue\Client\Meta\QueueMetaRegistry;
 use Enqueue\Client\Meta\TopicMetaRegistry;
 use Enqueue\Client\Producer;
+use Enqueue\Client\ProducerV2;
 use Enqueue\Client\RouterProcessor;
+use Enqueue\Client\RpcClient;
 use Enqueue\Consumption\ChainExtension as ConsumptionChainExtension;
 use Enqueue\Consumption\QueueConsumer;
 use Enqueue\Symfony\TransportFactoryInterface;