Correct .asoundrc file for ReSpeaker Core v2

We wanted to work directly with ALSA and so removed PulseAudio, but then aplay does not work.

We have a simple .asoundrc file that fixes this, but wanted the correct asound definition. We found .conf files for the 2mic, 4mic, and 6mic hats, but not for ReSpeaker Core v2. Do you have one?

Also, will we need PulseAudio if we want to use librespeaker in the future?