Add substream name in logs

src/AsapoWorker/streamer.py

 import logging
 from threading import Event
+import threading
 from asapo_producer import AsapoProducerError
 from AsapoWorker.errors import (
     TemporaryError, MissingDataError, ConfigurationError, EndOfStreamError,
@@ -239,6 +240,7 @@ class Streamer:
 
     def run(self):
         try:
+            threading.current_thread().name = f"substream_{self.receiver.substream}"
             if self.metadata_receiver:
                 log.info("Waiting for substream metadata")
                 while not self.stopped.is_set():