Wallets that send/receive can't send to onion addresses, nor configure alt clearnet address for sending

[huumn]

While we plan to break up send/receive forms for wallets, we currently don't. e.g. If someone wants to use lnbits for receiving at an onion address, they won't be able to also configure sending because non-tor browsers do not understand onion addresses.

Aside from separating configuration of send/receive, it'd be nice to send via an onion. It's unclear if that's possible however or what's required if it is possible. I guess we'd need an authenticated tor proxy with tls through the proxy that terminates tls at the destination (so that the proxy can't see what's being proxied).