Enable qt support in stylix, cleaned up comments and made stylix manage niri colors

modules/stylix/home.nix

@@ -5,6 +5,7 @@
   ...
 }: {
   imports = [
+    inputs.niri.homeModules.stylix
   ];
 
   services = {
@@ -16,10 +17,9 @@
       #firefox = {
       #  enable = true;
       #  colorTheme.enable = true;
-      #  profileNames = [ "${username}" ];
+      #  profileNames = ["${username}"];
       #};
-      qt.enable = false;
-      qt.platform = "kde";
+      niri.enable = true;
       #kde.enable = false;
     };
   };