gnome-latex :: Port to GAction and Amtk
=======================================

To get rid of the use of GtkAction and GtkUIManager, which are now deprecated in
GTK 3, and which have been removed in GTK 4.

Misc notes
----------

- GtkCheckMenuItem is used in: View, Build and Tools menus.

- GtkRadioMenuItem is used only in: Documents menu. So it can be created
  separately, but the implementation would be cleaner with a placeholder
  mechanism.

- It _is_ possible to create some menu/toolbar items with Amtk and keep the rest
  with GtkUIManager, during the migration. At the time of writing, the LaTeX and
  Math menus have been ported, while most of the rest isn't.

- Note that there is also `amtk_utils_create_gtk_action()` and other utils
  functions in Amtk to ease the transition.

Todo-list
---------

- Create GAction's, port GtkActionEntry's to AmtkActionInfoEntry's and use
  `amtk_utils_create_gtk_action()`.

- Port toolbars to Amtk.

- Port the menu to Amtk.

- Do a maximum in C and in Amtk or Tepl.
