Block connections by ASN or GeoIP

[ignoramous]

A user writes,

Please give us a country blocking option. Whole country aka China, Russia, Ukraine etc. I can help with the lists of ips if needed.

Another writes,

I'd advise blocking them by Asn

See also: #61

Originally posted by @ignoramous in https://github.com/celzero/rethink-app/issues/50#issuecomment-950105118

[ignoramous]

refs:

• https://incolumitas.com/2022/03/09/find-out-if-an-IP-address-belongs-to-a-hosting-provider/
• https://ipapi.is/geolocation.html