refactor: inputs/ --> {sys,home}/

sys/modules/base/host/hardware/features/default.nix

@@ -0,0 +1,22 @@
+{ lib, config, ... }:
+
+let
+  inherit (lib) types mkOption;
+in
+
+{
+  imports = [
+    ./bluetooth.nix
+    ./backlight.nix
+    ./battery.nix
+    ./ssd.nix
+    ./audio.nix
+    ./video.nix
+  ];
+
+  options.systemModules.host.hardware.features = mkOption {
+    type = with types; listOf (enum ["audio" "video" "bluetooth" "backlight" "battery" "ssd"]);
+    default = [];
+    description = "What extra hardware feature system modules to use";
+  };
+}