add locale i18n codes

[jlchafardet]

it would be amazing to have the locale i18n code for each language/country for internationalization purposes.

for example:
Country: Spain
Language: Spanish,
Locale i18n Code: es_ES

[yackermann]

@jlchafardet Countries project idea is to create simple DB about ISO countries. i18n codes are rather specific, and not going to work since for languages we use Alpha3 codes.

[LucianU]

I would also like this feature. I have an application where, besides the country name, currency and ISO code, I'm also using the locale code for internalization. Having all these in one place, would make things easier.

[thawkins]

+1 for this feature, it would make a big difference for us.

Just an array of "locale" would be very useful, ie for switzerland

locale: {
"de_CH",
"fr_CH",
"it_CH"
}