feat: server sdk (#47)

* New webrtc build scripts (Still not integrated within the SDK)
* New livekit-api crate (Integrate the server sdk protocol of livekit)
* Moved livekit-utils to livekit-protocol

livekit/src/room/room_session.rs

@@ -1,10 +1,10 @@
 use crate::participant::ConnectionQuality;
 use crate::prelude::*;
-use crate::proto;
 use crate::rtc_engine::{EngineEvent, EngineEvents, EngineResult, RtcEngine};
 use crate::signal_client::SignalOptions;
 use crate::{RoomError, RoomEvent, RoomResult, SimulateScenario};
-use livekit_utils::observer::Dispatcher;
+use livekit_protocol as proto;
+use livekit_protocol::observer::Dispatcher;
 use parking_lot::{Mutex, RwLock, RwLockReadGuard};
 use std::collections::HashMap;
 use std::sync::atomic::{AtomicU8, Ordering};