Add default user login

hosts/franz/default.nix

@@ -5,7 +5,9 @@
   config,
   pkgs,
   ...
-}: {
+}: let
+  vars = import ../../vars.nix;
+in {
   imports = [
     inputs.hardware.nixosModules.common-pc-ssd
     inputs.disko.nixosModules.default
@@ -20,6 +22,9 @@
     ../common/optional/docker.nix
   ];
 
+  users.mutableUsers = true;
+  users.users.${vars.user}.password = "changeme";
+
   nix.extraOptions = ''
     download-speed = 4000
   '';