feat: initial REST endpoints and websocket

/create
/delete
/ws

crates/backend/Cargo.toml

@@ -5,3 +5,15 @@ authors.workspace = true
 edition.workspace = true
 
 [dependencies]
+serde.workspace = true
+axum = { version = "0.6", features = ["ws", "headers"] }
+serde_json = "1"
+tokio = { version = "1", features = ["full"] }
+tracing = "0.1"
+tracing-subscriber = "0.3"
+common.workspace = true
+thiserror = "1.0.40"
+tower = "0.4.13"
+uuid.workspace = true
+tower-http = { version = "0.4.0", features = ["fs", "trace"] }
+tokio-stream = { version = "0.1.14", features = ["sync"] }