refactor: move graphical applications to a separate bundle

this facilitates lean clients, e.g. a laptop with only a virutal console

modules/nixos/bundles/desktop.nix

@@ -1,8 +1,5 @@
 {
-  # keep-sorted start
-  pkgs,
   util,
-  # keep-sorted end
   ...
 }:
 {
@@ -13,17 +10,4 @@
     "protonmail-bridge"
     # keep-sorted end
   ];
-
-  environment.systemPackages = with pkgs; [
-    # keep-sorted start
-    beeper
-    calibre
-    cameractrls-gtk3
-    jellyfin-desktop
-    # https://github.com/NixOS/nixpkgs/issues/437865
-    # jellyfin-media-player
-    onlyoffice-desktopeditors
-    textsnatcher
-    # keep-sorted end
-  ];
 }