talkatu/talkatu

Convert TalkatuDemo to a GtkApplication

2022-01-30, Elliott Sales de Andrade
c968fcbb5bb9
Convert TalkatuDemo to a GtkApplication

While this is a requirement for GTK4, it can be done in GTK3, so this targets `default`. I don't know if we want to merge/rebase `gtk4` over it, `graft` it on, or just only apply it to `gtk4` and leave `default` untouched.

Testing Done:
Compiled and ran.

Reviewed at https://reviews.imfreedom.org/r/1260/
syntax: glob
*.pyc
*.ui~
\#*.ui\#
syntax: regexp
^artifacts\/
^build.*\/
^debian\/?
^fedora\/?
^packaging\/debian\/tmp\/
^packaging\/debian\/(.+\.)?(substvars|debhelper\.log)$
^packaging\/debian\/build.*\/
^packaging\/debian\/\.debhelper\/
^packaging\/debian\/debhelper-build-stamp
^packaging\/debian\/gir1.2-talkatu-0.0\/
^packaging\/debian\/libtalkatu0?(-.+)?\/
^packaging\/debian\/talkatu-demo\/
^packaging\/debian\/files$
^po\/.+\.pot$
^obj-.+\/
^scanbuild\/
^subprojects\/.+\/
^valgrind\/