rename controller supervisor
add exchange controller
add exchange controller
add new api methods in messaging
add msg_component_sup
implement supervisor strategy
add msg_component
update docs
add component store
improve code quality
update docs
add subscribe for pub_sub
add send_message_after_reply_with_ack_test_
send_messages_after_ack_test_
add messages_before_reply_whithout_ack_test_
add monitor_demonitor_test_
add subscribe_unsubscribe_simple_test_
add subscribe_unsubscribe_simple_test_
add auto_unsubscribe_test_
add double_exchange_test_