Set up internationalization framework

It seems like there is no direct support for translations in Compose for Desktop: JetBrains/compose-jb#425

Jetpack Compose on Android uses the already known strings.xml, but this doesn't work on the desktop.

In that issue they mentioned the following framework that allows using resources across various platforms: icerockdev/moko-resources

Once set up, we should import the translations from Briar GTK: #4 (closed)