message: feat(server): add `tcp_sleep_on_accept_errors` builder method
  This method allows to set the value of the `sleep_on_errors` option for
  accepted connections using the builder.
  Closes
diff: @@ -378,5 +378,25 @@ impl<E> Builder<AddrIncoming, E> {
  self.incoming.set_nodelay(enabled);
  self
  }
  +
  + /// Set whether to sleep on accept errors.
  + ///
  + /// A possible scenario is that the process has hit the max open files
  + /// allowed, and so trying to accept a new connection will fail with
  + /// EMFILE. In some cases, it's preferable to just wait for some time, if
  + /// the application will likely close some files (or connections), and try
  + /// to accept the connection again. If this option is true, the error will
  + /// be logged at the error level, since it is still a big deal, and then
  + /// the listener will sleep for 1 second.
  + ///
  + /// In other cases, hitting the max open files should be treat similarly
  + /// to being out-of-memory, and simply error (and shutdown). Setting this
  + /// option to false will allow that.
  + ///
  + /// For more details see [`AddrIncoming::set_sleep_on_errors`]
  + pub fn tcp_sleep_on_accept_errors(mut self, val: bool) -> Self {
  + self.incoming.set_sleep_on_errors(val);
  + self
  + }
  }
  