Add holidays for Reunion

[julienmru]

Please consider merging this PR to add support for Reunion holidays

[wandersonwhcr]

Is this a province or state from France?

If yes, IMHO, we must create or change FR class and include a state parameter, like BR or DE.

[wandersonwhcr]

Examples:

https://github.com/checkdomain/Holiday/blob/master/src/Provider/BR.php
https://github.com/checkdomain/Holiday/blob/master/src/Provider/DE.php

[julienmru]

Dear @wandersonwhcr, it is an overseas territory, a part of France but with its own ISO country code, IDD, domain name extension, etc. It's located East coast of Madagascar.

When you ship to Reunion from other countries, you need to specify 'Reunion' as a country and not 'France'.

So I guess it's really up to your policy but most libraries handle Reunion as a specific country, eg. giggsey/libphonenumber-for-php.

[wandersonwhcr]

@julienmru TY

[wandersonwhcr]

Nothing wrong here :)