Convert system configuration to a flake

flake.nix

@@ -0,0 +1,16 @@
+{
+  description = "Nettika NixOS Configurations";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/24.05";
+  };
+
+  outputs = { self, nixpkgs }: {
+    nixosConfigurations = {
+      marauder = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [ ./marauder.nix ];
+      };
+    };
+  };
+}