Add rpc client and auto_delete option for exchanges and queues

In the existing code:

• I've updated the queue binding and the exchange delacere to support auto_delete flag
• I've added basic_publish the option to set other header properties (if needed) using a dictionary - extra_properties
• I've allowed in queue binding the possibility to bind only for the messages for a specific queue. As an example, in the RPC mode, both the client and the server are using the same exchange, but we need to separate the messages for the server queue ( requests) from those for the client anonymous queue (replays)

I've added:

• RPC Client
• RPC server
• Tests for RPC Client and Server