re-structure package configuration. fully modularize everything

home/modules/defaultDesktopPack.nix

@@ -0,0 +1,34 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+with lib; let
+  cfg = config.local.apps.defaultDesktopPack;
+in {
+  options.local.apps.defaultDesktopPack = {
+    enable = mkEnableOption "common desktop apps";
+  };
+  config = mkIf cfg.enable {
+    home.packages = with pkgs; [
+      calibre
+      discord
+      gwenview
+      libreoffice-fresh
+      mpv
+      obs-studio
+      pavucontrol
+      pdfarranger
+      qpdfview
+      runelite
+      spotify
+      tdesktop
+      usbutils
+      vpsfree-client
+      vscodium-fhs
+      zola
+      zoom-us
+    ];
+  };
+}