Add more language support for country name

[PeterDaveHello]

Hello,

I'd like to help add 🇹🇼 Traditional Chinese language support, I saw that there is country_cn for country name in Simplified Chinese, in the file ProtonVPN/Resources/phone_country_code.geojson, not sure how what's the proper process to add a language support for country name here?

Thanks!

[KovalevArtem]

https://crowdin.com/project/protonvpn/zh-TW