fastlane i18n ru

Please add the App metadata to Weblate to make it easier to translate. You'll need to create a new component here: https://hosted.weblate.org/projects/freedombox/

Here is a sample of Conversations app metadata translation via Weblate https://translate.codeberg.org/projects/conversations/app-store-metadata-conversations/

Here more details about translation for the full_description.txt https://github.com/WeblateOrg/weblate/issues/1525#issuecomment-464086454

Meanwhile here I added one translation.