feat: video publishing (#42)

- Prepare webrtc abstraction ( for future wasm support )
- Added track publish support for videos
  - Added LogoTrack example to simple_room demo
- Lot of cleanup
- There are compiler warnings I'll solve on our v1 release

livekit/src/signal_client/mod.rs

@@ -114,13 +114,13 @@ impl SignalClient {
     }
 }
 
-impl From<proto::JoinResponse> for RTCConfiguration {
+impl From<proto::JoinResponse> for RtcConfiguration {
     fn from(join_response: proto::JoinResponse) -> Self {
         Self {
             ice_servers: {
                 let mut servers = vec![];
                 for ice_server in join_response.ice_servers.clone() {
-                    servers.push(ICEServer {
+                    servers.push(IceServer {
                         urls: ice_server.urls,
                         username: ice_server.username,
                         password: ice_server.credential,

livekit/src/signal_client/signal_stream.rs

@@ -34,7 +34,7 @@ enum InternalMessage {
 ///
 /// It is replaced by [SignalClient] at each reconnection.
 #[derive(Debug)]
-pub(crate) struct SignalStream {
+pub(super) struct SignalStream {
     internal_tx: mpsc::Sender<InternalMessage>,
     read_handle: JoinHandle<()>,
     write_handle: JoinHandle<()>,
@@ -46,7 +46,7 @@ impl SignalStream {
     ///
     /// SignalStream will never try to reconnect if the connection has been
     /// closed.
-    pub(super) async fn connect(
+    pub async fn connect(
         url: &str,
         token: &str,
         options: SignalOptions,