Add a configuration for flakes

flake.nix

@@ -0,0 +1,14 @@
+{
+    description = "NixOS Machine Configurations by manuth";
+
+    inputs = {
+        nixpkgs.url = "nixpkgs/nixos-unstable";
+    };
+
+    outputs = { self, nixpkgs }: 
+    let
+        system = import ./system.nix;
+    in {
+        nixosConfigurations.manu-surface = system "manu-surface" {};
+    };
+}