In prefer the approach Google is taking with Chrome and Microsoft is taking with Windows 10 which is to use the system defined DNS servers and if they support D

In prefer the approach Google is taking with Chrome and Microsoft is taking with Windows 10 which is to use the system defined DNS servers and if they support DoH to use it and if not to fallback to using them with normal DNS. There is no need to configure individual applications and no need to develop a new means of distributing DoH server information.