message: Add convenience type alias
diff: @@ -36,6 +36,10 @@ using accept_event_t
  template <class... Ts>
  using acceptor_resource_t = async::producer_resource<accept_event_t<Ts...>>;
  +/// A consumer resource for processing accepted connections.
  +template <class... Ts>
  +using listener_resource_t = async::consumer_resource<accept_event_t<Ts...>>;
  +
  /// Convenience function for creating an event listener resource and an
  /// @ref acceptor_resource_t via @ref async::make_spsc_buffer_resource.
  template <class... Ts>
  