Dummy server to support proof-of-concept client

I'm planning to use WebSockets for game networking because it can be
used both on native and web environments.

I need some time and tools to figure out how to make Bevy hold and use a
WebSocket. I've taken the Axum WS text chat for use as a dummy activity
so I can build out a Bevy app which implements the text chat behavior.

server/Cargo.toml

@@ -4,3 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+axum = { version = "0.8", features = ["ws"] }
+futures-util = { version = "0.3.31", features = ["std", "sink"] }
+tokio = { version = "1", features = ["full"] }