feat: add orpheus to flake

systems/orpheus.nix

@@ -0,0 +1,24 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: {
+  imports = [
+    # Include the results of the hardware scan.
+    ./hw-orpheus.nix
+  ];
+
+  # Use the extlinux boot loader. (NixOS wants to enable GRUB by default)
+  boot.loader.grub.enable = false;
+  # Enables the generation of /boot/extlinux/extlinux.conf
+  boot.loader.generic-extlinux-compatible.enable = true;
+
+  networking.hostName = "orpheus"; # Define your hostname.
+  networking.networkmanager.enable = true; # Easiest to use and most distros use this by default.
+
+  services.openssh.enable = true;
+  networking.firewall.enable = false;
+
+  system.stateVersion = "25.05";
+}