Add Helper class or static methods to support more locales

[elPeiretti]

Feature proposal

It would be nice to have a Helper class used by the LocaleComboBox component with country conversion methods: https://www.iso.org/obp/ui/#search/code

• Numeric to alpha 2
• alpha 3 to alpha 2

Describe solution expectations

Something like:

public LocaleCountryConverter {

  // all possible conversions based on the iso table (hardcoded maybe?)
  private static Map<String,String> conversions;

  private LocaleCountryConverter() {}
  
    // returns ISO 3166-1-alpha-2 country code
    public static String convert(String countryCode) {
        return conversions.get(countryCode);
    }

}

Additional information

No response