Interslavic translation

[noomorph]

Context

Hello! At the Interslavic OSS organization, we aim to cover morphological and orthographical functionality (word inflection, verb conjugation, transliteration, etc.) with unit tests, and while English is a good choice for keeping technical documentation, it is preferable to make reports accessible for every contributor to Interslavic language:

New translation

Dashboard	Test page

Developer notes

1. Since Interslavic is not supported by i18next directly, I had to copy&paste suitable pluralization rules (1,2,5):

i18next.on("initialized", () => {
  const pluralResolver = i18next.services.pluralResolver;
  pluralResolver.addRule("isv", pluralResolver.getRule("be"));
});

2. The last contributor who submitted Turkish translation accidently converted some of files to CRLF. My pull request brings LF endings back. Please use the "Hide whitespace" option on GitHub when reviewing.

3. The language code used ("isv") is not official yet, although our pending ISO committee submissions for code pretend exactly for this one. I could have used "art-x-interslv" (current idiomatic BCP 47 identifier according to CLCR), but that would require extra changes to your Handlebars template rendering – e.g., to introduce some language.abbr property along with language.id to avoid breaking the language selector visually.

Checklist

• Sign Allure CLA
• Provide unit tests
  Not sure if this is applicable here – there are no IF-ELSE branches in my i18next plural augmentation code, and the API I'm using is stable enough – it is still available both in i18next@8 and in i18next@23, so I don't see major reasons to worry. 🤷‍♂️

P.S. @ru-danko, thanks for checking on the translation keys.

[epszaw]

Dobra rabota!