Reorganize modules

hosts/frodo/default.nix

@@ -0,0 +1,26 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+
+{ config, pkgs, ... }:
+
+{
+  imports = [
+    # Include the results of the hardware scan.
+    ./hardware-configuration.nix
+    ../../modules/common.nix
+    ../../modules/users.nix
+    ../../modules/locales.nix
+    ../../modules/services.nix
+    ../../modules/programs.nix
+  ];
+
+  # Bootloader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/vda";
+  boot.loader.grub.useOSProber = true;
+
+  networking.hostName = "frodo"; # Define your hostname.
+
+  system.stateVersion = "25.11"; # Did you read the comment?
+}