Function erlang_port::stdio

pub fn stdio(
    packet_size: PacketSize
) -> IOPort<PacketReceiver<Stdin>, PacketSender<Stdout>>

Creates an IOPort using stdin & stdout with the specified packet size.

This should be used with ports that have been opened in Erlang/Elixir with the :use_stdio and {:packet, N} options, where N matches packet_size.

Note: at present we don't do any locking of the underlying stdin or stdout streams, so you should only call this once in your port. This may be changed in the future...