🧹 Moved almost all files to /modules. Moved some code to separate files

modules/hardware/graphics/default.nix

@@ -0,0 +1,19 @@
+{ pkgs, ... }:
+
+{
+  imports = [
+    ./nvidia.nix
+  ];
+
+  # For hardware acceleration
+  environment.sessionVariables.LIBVA_DRIVER_NAME = "iHD";
+
+  # Enable OpenGL
+  hardware.graphics = {
+    enable = true;
+    extraPackages = with pkgs; [
+      # Used for hardware-acceleration
+      intel-media-driver # For Broadwell (2014) or newer processors. LIBVA_DRIVER_NAME=iHD
+    ];
+  };
+}

modules/hardware/graphics/nvidia.nix

@@ -0,0 +1,15 @@
+{ ... }:
+
+{
+  hardware.nvidia = {
+    # Required
+    modesetting.enable = true;
+    # Use closed-source drivers
+    open = false;
+    # Enable the Nvidia settings menu
+    nvidiaSettings = true;
+  };
+
+  # Load Nvidia driver for Xorg and Wayland
+  services.xserver.videoDrivers = [ "nvidia" ];
+}