Add shell for styling qt in the future

Still have to find a good gruvbox theme in Nixpkgs that I could use,
or a way to use a them that is not present in Nixpkgs.

users/hu/packages/qt.nix

@@ -0,0 +1,10 @@
+{ pkgs, ... }:
+
+{
+  qt = {
+    enable = true;
+    style = {
+      
+    };
+  };
+}