Refactor: Rename hardware.* by category

Fix #5

modules/system/hardware/audio/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+
+{
+  imports = [
+    ./pipewire.nix
+  ];
+}

modules/system/hardware/audio/pipewire.nix

@@ -0,0 +1,30 @@
+{ config, lib, ... }:
+
+with lib;
+let
+  cfg = config.modules.system.hardware.audio.pipewire;
+in
+{
+  options.modules.system.hardware.audio.pipewire = {
+    enable = mkEnableOption ''
+      Enable pipewire with my custom configurations
+    '';
+  };
+  config = mkIf cfg.enable {
+    # Enable sound with pipewire.
+    services.pulseaudio.enable = false;
+    security.rtkit.enable = true;
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      # If you want to use JACK applications, uncomment this
+      #jack.enable = true;
+
+      # use the example session manager (no others are packaged yet so this is enabled by default,
+      # no need to redefine it in your config for now)
+      #media-session.enable = true;
+    };
+  };
+}