refactor: use true common config and split rest

modules/nixos/client/hardwarecompatibility-yubikey.nix

@@ -0,0 +1,16 @@
+{ lib, config, pkgs, ... }:
+{
+  options.swarselsystems.modules.yubikey = lib.mkEnableOption "yubikey config";
+  config = lib.mkIf config.swarselsystems.modules.yubikey {
+    programs.ssh.startAgent = false;
+
+    services.pcscd.enable = false;
+
+    hardware.gpgSmartcards.enable = true;
+
+    services.udev.packages = with pkgs; [
+      yubikey-personalization
+    ];
+
+  };
+}