[FEATURE REQ] EventProcessorClient batch receive does not support tracing

[lmolkova]

We only trace single event processing, there is no tracing for batch case

https://github.com/Azure/azure-sdk-for-java/blob/c39d7d22b7e18a42e6df370957ecc0f14f7d4e05/sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/PartitionPumpManager.java