save usernames

src/imp/desktop.rs

@@ -169,3 +169,11 @@ pub async fn network_connect(
 
     super::network_loop(username, event_rx, reader, writer).await
 }
+
+pub fn set_default_username(username: &str) -> Option<()> {
+    None
+}
+
+pub fn load_username() -> Option<String> {
+    return None;
+}