Lemmy support #9

I was looking at lemmy but I couldn't find any documentation for their HTTP API. They do have a typescript client which I'll try

Also like mastodon there's no way of detecting if a link is to a lemmy page to keep it in-client. I'l need to figure something out for that. Mobile apps for mastodon often open an external web browser when you click a link to another mastodon post and that seems really bad to me, I don't want to have a client that does that

Unfortunately, it looks like the lemmy api is missing 'access-control-allow-origin' headers and threadclient would need to run a proxy server in order to communicate with lemmy instances. Lemmy support can't be added until this is changed: LemmyNet/lemmy#3109