Add Country flag emojies

[shivarajnaidu]

Thanks for the rich collection of data
i would like to raise a req to have a flag emojies like one we have here
https://github.com/risan/country-flag-emoji-json
https://github.com/risan/country-flag-emoji
https://github.com/matiassingers/emoji-flags/blob/master/data.json

[samayo]

this will take time, can you send a PR? if you can, if not np