gedit: Move out of GNOME

It has been moved out of GNOME core in favour of gnome-text-editor.
And it is not much of a GNOME app anymore either, using custom gtksourceview fork.

nixos/tests/noto-fonts.nix

···
 
   nodes.machine = {
     imports = [ ./common/x11.nix ];
-    environment.systemPackages = [ pkgs.gnome.gedit ];
+    environment.systemPackages = [ pkgs.gedit ];
     fonts = {
       enableDefaultFonts = false;
       fonts = with pkgs;[

pkgs/desktops/gnome/default.nix

···
 
   file-roller = callPackage ./apps/file-roller { };
 
-  gedit = callPackage ./apps/gedit { };
-
   ghex = callPackage ./apps/ghex { };
 
   gnome-boxes = callPackage ./apps/gnome-boxes { };
···
 #### Legacy aliases. They need to be outside the scope or they will shadow the attributes from parent scope.
 
   empathy = throw "The ‘gnome.empathy’ package was removed as it is unmaintained and no longer launches due to libsoup3 migration."; # added 2023-01-20
+  gedit = pkgs.gedit; # added 2023-07-05
   gnome-desktop = throw "The ‘gnome.gnome-desktop’ alias was removed. Please use ‘pkgs.gnome-desktop’ directly."; # converted to throw on 2022-10-26
   gnome-todo = pkgs.endeavour; # added 2022-07-30
   libgnome-games-support = throw "The ‘gnome.libgnome-games-support’ alias was removed. Please use ‘pkgs.libgnome-games-support’ directly."; # converted to throw on 2022-10-26

pkgs/top-level/all-packages.nix

···
     guile = guile_2_0;
   };
 
+  gedit = callPackage ../applications/editors/gedit { };
+
   gerbv = callPackage ../applications/science/electronics/gerbv {
     cairo = cairo.override { x11Support = true; };
   };