move gnome into its own file which is good and stuff

modules/gnome.nix

@@ -0,0 +1,34 @@
+{ config, lib, pkgs, nixos-unstable, inputs, ... }:
+{
+  # Enable the X11 windowing system.
+  services.xserver = {
+    enable = true;
+    xkb = {
+      layout = "us";
+      variant = "";
+      options = "caps_lock:esc";
+    };
+    # Enable the GNOME Desktop Environment.
+    desktopManager = {
+      xterm.enable = false;
+      gnome.enable = true;
+    };
+    displayManager.gdm.enable = true;
+  };
+  environment.gnome.excludePackages = with pkgs.gnome; [
+    baobab
+    cheese
+    epiphany
+    eog
+    yelp
+    simple-scan
+    geary
+    gnome-calculator
+    gnome-calendar
+    gnome-weather
+    gnome-maps
+    gnome-contacts
+    pkgs.gnome-console
+    totem
+  ];
+}