faucet(asusd): add asusd service

faucet/asusd/default.nix

@@ -0,0 +1,18 @@
+{ pkgs
+, lib
+, config
+, ... }: with lib; let
+  cfg = config.faucet.asusd;
+in {
+  options.faucet.asusd = {
+    enable = mkEnableOption "ASUS laptop userland support daemon";
+  };
+
+  config = mkIf cfg.enable {
+    services.asusd.enable = true;
+
+    environment.persistence."/nix/persist/fhs".directories = [
+      "/etc/asusd"
+    ];
+  };
+}