title: Configure default dispatcher for all actors in config file
body: <p>Is it possible to set the default dispatcher for all actors in the system using only HOCON config or do I have to do:</p>
  
  <pre><code>Context.ActorOf(Props.Create&lt;TActor&gt;(propsArgs)
                      .WithDispatcher("my-fork-join-dispatcher"), actorName);
  </code></pre>
  
  <p>Ideally I would want to avoid having to configure this in code at all. </p>