Added NixOS configs

Hardware/xorg.nix

@@ -0,0 +1,26 @@
+
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  services = {
+    xserver = {
+      enable = true;
+      libinput= {
+        enable = true;
+        mouse = {
+          accelSpeed = "0";
+        };
+        touchpad = {
+          middleEmulation = false;
+          clickMethod = "buttonareas";
+          tapping = true;
+          naturalScrolling =true;
+        };
+      };
+      displayManager = {startx = {enable = true; }; };
+      videoDrivers = [ "nvidia" ];
+      layout = "us";
+      xkbVariant = "colemak";
+    };
+  };
+}