Add a plural resolver for locale "ht"

[marcja]

Fix #1491

Checklist

• only relevant code is changed (make a diff before you submit the PR)
• run tests npm run test
• tests are included
• documentation is changed or added

[coveralls]

Coverage remained the same at 92.941% when pulling d582c31 on marcja:patch-1 into b8b014f on i18next:master.

[jamuhl]

ht can't be found in the official https://unicode-org.github.io/cldr-staging/charts/37/supplemental/language_plural_rules.html#ht what is the language called (guess it's Haiti)?

[marcja]

Yes, Haitian Creole. It's a required locale for a project I'm working on.

[jamuhl]

Will be deployed with the next version...hope that is ok for you?

If needing it now, you can add rules using i18next.services.pluralResolver.addRule meanwhile...https://github.com/i18next/i18next/blob/master/src/PluralResolver.js#L90

[marcja]

Awesome. Thanks!

[adrai]

released with v19.6.3