better error feedback

[neonphog]

for example, here:

tx5/crates/tx5-connection/src/webrtc.rs

Line 106 in ed8d368

let (peer, mut peer_evt) = tx5_go_pion::PeerConnection::new(config).await?;

Where if you pass in a bad webrtc_config it will silently fail to upgrade connections to webrtc.

[ThetaSinner]

This issue is at least partially resolved by #183 which will log the error if the referenced line fails and returns an error.