add wireguard-tools

modules/nix/groups/laptop.nix

@@ -24,6 +24,7 @@ in
       element.enable = true;
       sddm.enable = true;
       mullvad.enable = true;
+      wireguard.enable = true;
       gui-utilities.enable = true;
       mouse.enable = true;
       thunderbird.enable = true;