feat: basic ffi server to support other languages (#34)

* wip

* wip

* wip

* wip

not a fan of the way I do handles ..

* errors and async semantic

* fix example

livekit-ffi/Cargo.toml

@@ -9,3 +9,15 @@ repository = "https://github.com/livekit/client-sdk-rust"
 [dependencies]
 livekit = { path = "../livekit", version = "0.1.1" }
 tokio = { version = "1.0", features = ["full"] }
+parking_lot = { version = "0.12.1", features = ["send_guard"] }
+prost = "0.11.0"
+prost-types = "0.11.1"
+lazy_static = "1.4.0"
+thiserror = "1.0.38"
+
+[build-dependencies]
+prost-build = { version = "0.11.1" }
+
+
+[lib]
+crate-type = ["cdylib", "staticlib"]