refactor: more sane profile structure

profiles/nixos/optional/gaming.nix

@@ -0,0 +1,36 @@
+{ pkgs, ... }:
+{
+  specialisation = {
+    gaming.configuration = {
+      networking = {
+        firewall = {
+          allowedUDPPorts = [ 4380 27036 14242 34197 ]; # 34197: factorio; 4380 27036 14242: barotrauma;
+          allowedTCPPorts = [ ]; # 34197: factorio; 4380 27036 14242: barotrauma; 51820: wireguard
+          allowedTCPPortRanges = [
+            { from = 27015; to = 27030; } # barotrauma
+            { from = 27036; to = 27037; } # barotrauma
+          ];
+          allowedUDPPortRanges = [
+            { from = 27000; to = 27031; } # barotrauma
+            { from = 58962; to = 58964; } # barotrauma
+          ];
+        };
+      };
+
+      programs.steam = {
+        enable = true;
+        package = pkgs.stable.steam;
+        extraCompatPackages = [
+          pkgs.proton-ge-bin
+        ];
+      };
+
+      hardware.xone.enable = true;
+
+      environment.systemPackages = [
+        pkgs.linuxKernel.packages.linux_6_12.xone
+      ];
+    };
+  };
+
+}