Add possibility to translate in other languages

[MXC48]

It could be good if you put the app on weblate or other, thanks to that we should be able to translate it :)

[brandonp2412]

I have dabbled with translations in my other app Quitter and it went smoother than I expected. However this app is much larger, so I would only consider accepting this as a merge request if someone wants to implement it.