Move Nix files back to the root of the project

hosts/lemp11/configuration.nix

@@ -0,0 +1,51 @@
+{ inputs, pkgs, ... }:
+
+{
+  imports = [
+    inputs.nixos-hardware.nixosModules.common-cpu-intel
+    inputs.nixos-hardware.nixosModules.common-gpu-intel
+    inputs.nixos-hardware.nixosModules.common-pc-laptop
+    inputs.nixos-hardware.nixosModules.common-pc-laptop-hdd
+    inputs.nixos-hardware.nixosModules.system76
+
+    ./hardware-configuration.nix
+    ./hardware.nix
+    ./programs.nix
+    ./services.nix
+
+    ../common
+    ../../users/opdavies
+    ../../users/eric
+    ../../users/luke
+  ];
+
+  nix.nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
+
+  # Bootloader.
+  boot = {
+    loader = {
+      systemd-boot = {
+        enable = true;
+        configurationLimit = 25;
+      };
+
+      efi = {
+        canTouchEfiVariables = true;
+        efiSysMountPoint = "/boot/efi";
+      };
+    };
+  };
+
+  systemd.extraConfig = ''
+    DefaultTimeoutStopSec=10s
+  '';
+
+  networking.networkmanager.enable = true;
+
+  security = {
+    polkit.enable = true;
+    rtkit.enable = true;
+  };
+
+  zramSwap.enable = true;
+}