a133 board: fix multiple audio issues: use pipewire

[andriniaina]

/!\ tested only on Trimui Smart Pro

Currently on a133 boards

• we force all apps to directly use ALSA. Pipewire is used only for volume control -- Pipewire never receives any audio stream
• the ALSA volume control "Headphone" is actually some sort of attenuation filter (volume control is "inverted" => 0 is actually 100%, and its value should always be forced kept at 0)

This PR aims to change the above by fully leveraging Pipewire, and therefore also fixes multiples audio QoL on knulli for a133 boards. I deleted most of the weird ALSA-specific commands, to stay closer to batocera.

• now supports bluetooth headphones, also supports any audio device connected the USB-C host port (sound bar speakers, headset, etc)
• automatic switching to headphones and back to speakers if disconnected
• multiple audio streams/apps at the same time
• no more muted or inverted volume controls
• multiple audio profiles

[andriniaina]

Fixes #54