add steam module

sadly this has to be a system package until we find a non shitty way of
installing in through hm

nixos/steam.nix

@@ -19,13 +19,12 @@ in {
     };
 
     environment = {
-      systemPackages = with pkgs;
+      systemPackages = with pkgs; [
-        [
+        protontricks
-          protontricks
+        protonup
-          protonup
+        protonup-ng
-          protonup-ng
+        winetricks
-          winetricks
+      ];
-        ];
     };
   };
 }