Make 'Severity' translatable

[noomorph]

Context

Makes it possible to use i18n keys for five allowed severity types: blocker, critical, normal, minor, trivial.

Adds initial translation values for English, Interslavic, Polish, and Russian.

English	Interslavic	Russian	Polish

Checklist

• Sign Allure CLA
• Provide unit tests (please advise if applicable).

[noomorph]

Question

Could you please advise on whether it is recommended to associate the adjective with the Severity or with the Test? For example, should it be Важность: критическая or Важность: критический?

Other translations

I have an AI-generated translation table, but I'm unsure if incorporating it is wise. Maybe humans would do a better job gradually.

Language (Code)	Severity Term	Blocker	Critical	Normal	Minor	Trivial
English (en)	Severity	Blocker	Critical	Normal	Minor	Trivial
Azerbaijani (az)	Əhəmiyyət	Bloker	Kritik	Normal	Kiçik	Əhəmiyyətsiz
Brazilian Portuguese (br)	Severidade	Bloqueador	Crítico	Normal	Menor	Trivial
German (de)	Schweregrad	Blockierend	Kritisch	Normal	Geringfügig	Unwesentlich
Spanish (es)	Severidad	Bloqueante	Crítico	Normal	Menor	Trivial
French (fr)	Sévérité	Bloquant	Critique	Normal	Mineur	Trivial
Hebrew (he)	חומרה	חוסם	קריטי	רגיל	קל	שולי
Japanese (ja)	重要度	ブロッカー	クリティカル	ノーマル	マイナー	些細な
Korean (kr)	중요도	차단	중대한	보통	경미한	사소한
Dutch (nl)	Ernst	Blokkerend	Kritiek	Normaal	Klein	Triviaal
Turkish (tr)	Önem	Engelleyici	Kritik	Normal	Küçük	Önemsiz
Chinese (Simplified) (zh)	严重性	阻塞	严重	普通	轻微	微不足道

[baev]

I only speak Java, so can't review the translations

[epszaw]

@noomorph let's keep the PR as is. I'll do a review as soon as it is possible