Feature Request: Add Opt-In and fully optional Friends Server integration

[gorillamoe]

Would be awesome if we can have a friends server integration, that makes hosting and joining a breeze.

The server address should be configurable and the server source code publicly available and also MIT licensed.

Project name could be: bananas-bonjour-server and a default server could be made available at: bonjour.getbananas.net.

Flow could be something like this:

1. Register with your E-Mail at the configured Bonjour Server
2. Verify Email
3. Add Friend request via Bananas (enter friend's Email)
4. Friend sees request (if on the same Bonjour server)
5. Friend can accept, decline or ignore user
6. You both see your online status from that point on
7. Either of you can start a call

We need a way to prevent spam.

Maybe make it configurable when a user accepts requests, so that you need to actively enable that for a short timeframe.

If this is disabled, you won't receive requests at all.

[gorillamoe]

Also the documentation on this should be really clear on what data is stored and sent between parties and when.

[gorillamoe]

Also: Think about a way corporate business might want to handle their users with the Bonjour server. I've no idea what that might look like on e.g. windows with e.g. Azure AD. Maybe @smood922 can chime in on that.

[smood922]

We use Entra/Azure AD extensively and that would be our first choice with clients. I'd think you would want to implement SAML SSO which would enable a wide variety of IdPs.