* Fix deadlock when disposing internal consumers

* fixing some tests

* Fixing tests

* improved tests

* review fixes

* Revert BasicConsumer cleanup

* review changes

* review changes

* Review Changes

* Rewrite code with SemaphoreSlim and CancellationToken

* One more attempt to rewrite ConsumerDispatcher

* Fix review comments

Co-authored-by: Yury Pliner <yury.pliner@gmail.com>