Moved modules into appropriate folders

modules/desktop/audio.nix

@@ -0,0 +1,29 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.audio;
+in
+{
+  options.audio = {
+    enable = lib.mkEnableOption "Enable sound module";
+  };
+
+  config = lib.mkIf cfg.enable {
+    # Enable sound with pipewire.
+    services.pipewire = {
+      enable = true;
+      audio.enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+    };
+
+    hardware.pulseaudio.enable = false;
+
+  };
+
+}