talkatu/talkatu

Add missing files to po/POTFILES
gtk4
2022-01-31, Gary Kramlich
2466a9167325
Add missing files to po/POTFILES

Testing Done:
ran `ninja talkatu-pot`

Reviewed at https://reviews.imfreedom.org/r/1269/
Talkatu is versioned in [mercurial](https://www.mercurial-scm.org/) and is
available on [keep.imfreedom.org](https://keep.imfreedom.org/talkatu/talkatu).
All contributions are provided via review requests at [reviews.imfreedom.org](https://reviews.imfreedom.org/).