bootloader: separated into new file

hostsModules/laptop/nixos/bootloader.nix

@@ -0,0 +1,15 @@
+{
+  inputs,
+  pkgs,
+  ...
+}:
+{
+  # grub theme
+  boot.loader.grub = {
+    theme = inputs.nixos-grub-themes.packages.${pkgs.system}.nixos; # if you want to use nixos grub theme
+  };
+
+  # Bootloader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+}