add bluetooth and nvidia modules + hw config

modules/hardware/nvidia.nix

@@ -0,0 +1,18 @@
+{ ... }: {
+  flake.nixosModules.nvidia = { config, ... }: {
+    # Enable OpenGL
+    hardware.graphics = {
+      enable = true;
+    };
+
+    services.xserver.videoDrivers = [ "nvidia" ];
+    hardware.nvidia = {
+      modesetting.enable = true;
+      powerManagement.enable = false;
+      powerManagement.finegrained = false;
+      open = true;
+      nvidiaSettings = true;
+      package = config.boot.kernelPackages.nvidiaPackages.stable;
+    };
+  };
+}