talkatu/talkatu

Update the pkg-config, gir, and vapi targets for gtk4
gtk4
2022-01-30, Gary Kramlich
5ab22d444b62
Update the pkg-config, gir, and vapi targets for gtk4

Testing Done:
ran `meson --wipe` and verified no immediate issues.

Reviewed at https://reviews.imfreedom.org/r/1257/
[main]
host = https://www.transifex.com
[talkatu.talkatu-pot]
file_filter = po/<lang>.po
minimum_perc = 0
source_file = po/talkatu.pot
source_lang = en
type = PO