feat(elcafe): add new server configuration

system/users/root.nix

@@ -0,0 +1,17 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.mySystem.users.root;
+in {
+  options.mySystem.users.root.disablePassword = mkEnableOption "Disables root password";
+  config = {
+    users.users.root = {
+      hashedPassword = mkIf cfg.disablePassword "*";
+      shell = pkgs.zsh;
+    };
+  };
+}