more refactoring

shared/client/games.nix

@@ -0,0 +1,18 @@
+{config, pkgs, ...}:
+{
+ programs.steam = {
+  enable = true;
+  remotePlay.openFirewall = true;
+  dedicatedServer.openFirewall = true;
+
+   nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
+    "steam"
+    "steam-original"
+    "steam-run"
+  ];
+
+  environment.systemPackages = with pkgs; [
+    lutris
+  ];
+ }; 
+}