🧹 restructure layout

modules/config/yubikey.nix

@@ -0,0 +1,32 @@
+{ config
+, lib
+, pkgs
+, ...
+}:
+
+with lib;
+let
+  cfg = config.my.yubikey;
+in
+{
+  options.my.yubikey = {
+    enable = mkOption {
+      default = false;
+      type = types.bool;
+      example = true;
+    };
+  };
+
+  config = {
+    services.udev.packages = [ pkgs.yubikey-personalization ];
+    environment.systemPackages = with pkgs; [
+      # cli
+      yubikey-manager
+      yubikey-personalization
+      paperkey
+      # graphical
+      yubikey-manager-qt
+      yubikey-personalization-gui
+    ];
+  };
+}