Feature request: Support configuration for TURNS / STUNS

[neowutran]

First, thanks for this nice software ! :) I discovered it very recently.

In my setup, I have an external TURN/STUN server, and I prefere to use TLS instead of non encrypted traffic.
But it seems it cannot be configured in screego.

https://github.com/screego/server/blob/master/ws/room.go#L49

I think it miss two things:

• Ability to use a domain name instead of an IP address
• Ability to configure that "turn" and "stun" strings to be "turns" and "stuns"

Are you interested in that / any better way to do that ?
If you are interested I can try to make a pull request

[jmattheis]

WebRTC traffic is already encrypted using DTLS. TURN over TLS doesn't really increase security, it's mostly used for working around strict firewalls. It doesn't seem like you have firewall problems, so I'm not sure if I want to support this.