continue refactor, home modules are actual modules and remove some useless files

homeConfigs/hosts/modules/game.nix

@@ -0,0 +1,6 @@
+
+{ config, lib, pkgs, ... }:
+
+{
+  	home.packages = with pkgs;[lutris mangohud];	
+}

homeConfigs/hosts/modules/nitrogen.nix

@@ -0,0 +1,28 @@
+{ config, lib, pkgs, homeDir, ... }:
+
+let
+  background = "${homeDir}/.config/nitrogen/wallpaper.png";
+in
+{
+  home.file.".config/nitrogen/bg-saved.cfg".text = ''
+    [xin_0]
+    file=${background}
+    mode=5
+    bgcolor=#000000
+    
+    [xin_1]
+    file=${background}
+    mode=5
+    bgcolor=#000000
+    
+    [xin_2]
+    file=${background}
+    mode=5
+    bgcolor=#000000
+    
+    [xin_3]
+    file=${background}
+    mode=5
+    bgcolor=#000000
+  '';
+}