Add Covid Ratio

Hi David,

Thanks for showing interest in adding your project to Translatewiki. I've created an issue on our issue board and gathered all the information we currently have - https://phabricator.wikimedia.org/T268987

For now, these are the things we need from you, 1. Description of the project 2. A logo, if possible

In addition, please see the concerns I've listed on the ticket.

Regards,