add queue- & exchange factory interfaces
use queue- & exchange factory interfaces
update producer- & consumer abstract service factory tests
add create channel mock trait
fix rpc server abstract service factory

check for callback existence in spec
update tests
update tests
fix rpc client abstract service factory tests
add rpc client abstract service factory tests
add consumer abstract service factory tests for exception cases
add connection to exchange- and queue-spec
add consumer abstract service factory tests for exception cases
add producer abstract service factory tests, add autoload_classmap