- Set ALSA_PLUGIN_DIR to PipeWire's alsa-lib path in package wrapper
(NixOS store paths aren't in ALSA's default plugin search)
- Add nixosModules.default: udev rule for /dev/uinput, systemPackages
- Add homeManagerModules.default: systemd user service for autostart
Co-authored-by: zitongcharliedeng <zitongcharliedeng@users.noreply.github.com>