Labels API - localisation support

[ThisIsMissEm]

This will add support for providing labels in multiple languages.

[ThisIsMissEm]

Some code researched already for this purposes, not sure if I'll use it:

import { parseLanguageTag } from '@phensley/language-tag'

vine.object({
  nameMap: vine.record(vine.string().trim()).validateKeys((keys, field) => {
    const nonBcp47Key = keys.find((key) => parseLanguageTag(key).compact() === 'und')
  
    if (!nonBcp47Key) {
      field.report(
        'Language must be a valid BCP-47 language tag', // message
        'record.keys.language',
        field
      )
    }
  }),
})

[ThisIsMissEm]

Reference links:

• https://github.com/wooorm/bcp-47-normalize
• https://github.com/phensley/cldr-engine/blob/main/packages/language-tag/src/parser.ts
• https://www.npmjs.com/package/@phensley/language-tag
• https://www.npmjs.com/package/bcp-47-match
• https://www.rfc-editor.org/rfc/rfc5646#section-4.4.1