initial livekit support

fix up code

undo changes to compose file

add back .env.example

crates/delta/src/util/test.rs

@@ -100,7 +100,7 @@ impl TestHarness {
         }
 
         let mut stream = self.sub.on_message();
-        while let Some(item) = stream.next().await {
+        while let Some(Ok(item)) = stream.next().await {
             let msg_topic = item.get_channel_name();
             let payload: EventV1 = redis_kiss::decode_payload(&item).unwrap();