pidgin/pidgin

Convert PurpleRequestGroup into a GObject

15 months ago, Elliott Sales de Andrade
18acb99a0fa6
Convert PurpleRequestGroup into a GObject

And go through with the renaming of `PurpleRequestFieldGroup` to `PurpleRequestGroup`.

Also, this now implements `GListModel`, but nothing is yet updated to use that.

Testing Done:
Compiled, and opened Request Fields from Demo protocol.

Reviewed at https://reviews.imfreedom.org/r/2322/
i18n = import('i18n')
# use the glib preset which is defined at
# https://github.com/mesonbuild/meson/blob/master/mesonbuild/modules/i18n.py#L93
# at the time of this comment.
i18n.gettext('pidgin', preset : 'glib')