Allow (local network / tor) electrum server without certificate

[Sjors]

I run an electrs instance on a private network. Having to make a maintain a certificate for it is a bit of a pain. It would be nice if there was a way to opt out of needing a certificate.

At the same time I understand that you don't want to introduce a footgun. Perhaps the app could allow it for private address ranges like 192.168 (https://datatracker.ietf.org/doc/html/rfc1918)

You can probably also drop the requirement for onion addresses (maybe it already does, I haven't tried).

[dpad85]

You can probably also drop the requirement for onion addresses

Yes that's what we do already.
We'll think about whitelisting local addresses, with a warning I think it should be fine, and it's easy to do.