add yubikey

modules/hardware/yubikey.nix

@@ -0,0 +1,13 @@
+{ config, pkgs, ... }:
+{
+  # Include udev rules for yubikey.
+  services.udev.packages = with pkgs; [
+    yubikey-personalization
+  ];
+
+  # OTP Manager
+  environment.systemPackages = with pkgs; [
+    yubioath-flutter
+  ];
+  services.pcscd.enable = true;
+}