feat(relay): log message if we are in standalone mode (#1874)

Signed-off-by: Gabi <gabrielalejandro7@gmail.com>
Co-authored-by: Gabi <gabrielalejandro7@gmail.com>

rust/relay/src/main.rs

@@ -159,6 +159,8 @@ async fn main() -> Result<()> {
             }
         }
     } else {
+        tracing::warn!("No portal token supplied, starting standalone mode");
+
         None
     };