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-ffi/src/server/conversion/mod.rs

@@ -1,7 +1,6 @@
-use crate::{proto, server::FFIHandleId};
+use crate::server::FFIHandleId;
 use livekit::prelude::*;
-use livekit::webrtc::prelude::*;
-use std::any::Any;
+use crate::proto;
 
 pub mod participant;
 pub mod publication;