refactor(de): move gnome config to separate file

modules/nix-config/de.nix

@@ -1,7 +1,6 @@
 {
   pkgs,
   lib,
-  config,
   currentSystemDe,
   ...
 }:
@@ -23,63 +22,15 @@ in
         enable = true;
         wayland.enable = true;
       };
-      gdm.enable = libDe.ifGnome true;
     };
 
     # Desktop environments
     desktopManager = {
       plasma6.enable = libDe.ifPlasma true;
-      gnome.enable = libDe.ifGnome true;
     };
-
-    gnome.gnome-keyring.enable = true;
   };
   environment.plasma6.excludePackages = with pkgs.kdePackages; [
     elisa
     konsole
   ];
-  environment.gnome.excludePackages = with pkgs; [
-    epiphany
-    geary
-    gedit
-    gnome-characters
-    gnome-console
-    gnome-contacts
-    gnome-maps
-    gnome-music
-    gnome-software
-    gnome-tour
-    seahorse
-    simple-scan
-    xterm
-    yelp
-  ];
-
-  programs.kdeconnect = libDe.ifNotNone {
-    enable = true;
-    package =
-      if (currentSystemDe == "gnome") then
-        pkgs.gnomeExtensions.gsconnect
-      else
-        pkgs.kdePackages.kdeconnect-kde;
-  };
-
-  programs.thunar.plugins =
-    with pkgs.xfce;
-    libDe.ifGnome [ ]
-    ++ [
-      thunar-archive-plugin
-      thunar-media-tags-plugin
-      thunar-vcs-plugin
-      tumbler
-    ];
-
-  # Hack to fix "Your GStreamer installation is missing a plug-in." inside of Nautilus
-  environment.sessionVariables.GST_PLUGIN_SYSTEM_PATH_1_0 =
-    lib.makeSearchPathOutput "lib" "lib/gstreamer-1.0"
-      [
-        pkgs.gst_all_1.gst-plugins-good
-        pkgs.gst_all_1.gst-plugins-bad
-        pkgs.gst_all_1.gst-plugins-ugly
-      ];
 }