message: feat(server): add `http1_max_buf_size` in the `server::Builder`
  Similarly to `client::Builder::http1_max_buf_size`.
diff: @@ -302,6 +302,14 @@ impl<I, E> Builder<I, E> {
  self
  }
  + /// Set the maximum buffer size.
  + ///
  + /// Default is ~ 400kb.
  + pub fn http1_max_buf_size(mut self, val: usize) -> Self {
  + self.protocol.max_buf_size(val);
  + self
  + }
  +
  /// Sets the `Executor` to deal with connection tasks.
  ///
  /// Default is `tokio::spawn`.
  