Arturia AudioFuse support

[GitHub issues - opened <github@alsa-project.org>]

alsa-project/alsa-ucm-conf issue #568 was opened from saaj:

I own [Arturia AudioFuse][1]. I am on Linux Mint and I got faux "Analogue Surround 7.1 Output" probably since Linux Mint 20. The version before that was property split input multiple devices in the system sound settings. Not a big deal, but occasionally I want just plug it in to listen to music on a good DAC and headphone (without setting up Jack and ingestigating XRUNs). I didn't find a simple workaround and just used Jack (in my instrument/recording setup).

I recently updated to Linux Mint 22.1 (based on Ubuntu 24.04) and wanted to explore if there's a solution, since LM's audio is now based in PipeWire. Out of the box I got the same "Analogue Surround 7.1 Output". After a lot of searching, I found that some Arturia products are already in my `/usr/share/alsa/ucm2/USB-Audio/Arturia` (alsa-ucm-conf 1.2.10-1ubuntu5.4). 

Then I just applied https://github.com/alsa-project/alsa-ucm-conf/commit/b68aa52, `cp Minifuse-12.conf Audiofuse.conf`, `cp Minifuse-12-HiFi.conf Audiofuse-HiFi.conf`, added an include in `USB-Audio.conf` and `s/minifuse12/audiofuse` in the files. `systemctl --user restart pipewire pipewire-pulse wireplumber` and viola -- I've got the split back! :-) I'm only interested in "Main Output L/R AudioFuse", which is working. The rest may not, and I still plan to use Jack for recording. But I'm happy to validate things on the interface.

Attaching my patch over Minifuse-12 for completeness.

[audiofuse.patch.gz](https://github.com/user-attachments/files/20541119/audiofuse.patch.gz)

[1]: https://www.arturia.com/products/audio/audiofuse/overview

Issue URL     : https://github.com/alsa-project/alsa-ucm-conf/issues/568
Repository URL: https://github.com/alsa-project/alsa-ucm-conf