gplugin/gplugin

Add gplugin-gtk4-viewer and its man page to the rpm spec file

2021-10-24, Gary Kramlich
b64f768f9f66
Add gplugin-gtk4-viewer and its man page to the rpm spec file

Testing Done:
Ran the `fedora-34-amd64` convey plan successfully.

Reviewed at https://reviews.imfreedom.org/r/1097/
// SPDX-FileCopyrightText: 2021 GNOME Foundation
// SPDX-License-Identifier: LGPL-2.1-or-later
// A map between namespaces and base URLs for their online documentation
baseURLs = [
[ 'GLib', 'https://docs.gtk.org/glib/' ],
[ 'GObject', 'https://docs.gtk.org/gobject/' ],
[ 'GPlugin', 'https://docs.imfreedom.org/gplugin/' ],
[ 'GModule', 'https://docs.gtk.org/gmodule/' ],
[ 'Gtk3', 'https://docs.gtk.org/gtk3/' ],
]