Mobile Kotlin resources

Added in version 5.4.

Mobile Kotlin resources specific format heavily based on Android string resources.

Weblate configuration

Typical Weblate Component configuration
File mask	shared/src/commonMain/resources/MR/*/plurals.xml
Monolingual base language file	shared/src/commonMain/resources/MR/base/plurals.xml
Template for new translations	Empty
File format	Mobile Kotlin Resource