Started with command parsing

side-node/src/main.rs

@@ -1,7 +1,11 @@
+use cli::parse_args;
 use websockets::{WebSocket, WebSocketError};
 
+pub(crate) mod cli;
+
 #[tokio::main]
 async fn main() -> Result<(), WebSocketError> {
+    parse_args();
     let mut ws = WebSocket::connect("ws://localhost:8080/").await?;
 
     ws.send_text("foo".to_string()).await?;