Added NixOS configs

Hardware/boot.nix

@@ -0,0 +1,30 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot = {
+    initrd={
+      availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usb_storage" "sd_mod" ];
+      kernelModules = [ ];
+    };
+    kernelModules = [ "kvm-intel" ];
+    extraModulePackages = [ ];
+    loader = {
+      efi = {
+        canTouchEfiVariables = true;
+        efiSysMountPoint = "/boot/efi";
+      };
+      grub = {
+        enable = true;
+        useOSProber = true;
+        efiSupport =  true;
+        device = "nodev";
+        splashImage = "/etc/cirno.png"; #hehe
+        splashMode = "stretch";
+        configurationName = "nixbruh";
+      };
+    };
+    kernelParams = [ "nvidia-drm.modeset=1" "intel_pstate=active"]; 
+  };
+}