Vaccination certifcates from Taiwan

[tbreier]

Thanks for your great tool!

Taiwan's EU Covid Certificates (https://www.cdc.gov.tw/En/Bulletin/Detail/uGl-4LQWPzLxrRbqxRaEsQ?typeid=158) list "Taiwan, Province of China" as country of vaccination. However, for all practical purposes Taiwan is not a Province of China. Also China is not issuing EU Covid Certifcates at the moment, so this would maybe cause some confusion somewhere.

For reference, the RKI CovPass app lists "Taiwan" as country of vaccination, the Corona Warn App lists "TW", both seem to be adequate solutions. The original PDF issued by Taiwan's Centers for Disease Control, Ministry of Health and Welfare lists "Republic of China (Taiwan) 中華民國" (bilingually) for country of vaccination.

I tried to be more helpful by seeing if I can open a PR right away, but I noticed the app is using the EU data repository directly, so not sure what a good solution would be. Again note though that the CovPass and Corona Warn App list things correctly, so I do wonder what they are using as a data source.

[thejimu]

In addition to this, can we please have support for vaccines from Medigen Vaccine Biologics Corp (MVC)! Passes with this vaccine don't allow us to create a card. Thanks.