Add logging on Consumer disconnected

src/Consumer.php

@@ -130,6 +130,12 @@ final class Consumer extends Connection
                     }
                 }
 
+                $this->logger->debug('Consumer disconnected.', [
+                    'address' => $this->address,
+                    'topic' => $this->topic,
+                    'channel' => $this->channel,
+                ]);
+
                 $this->stream = new NullStream();
             });
         });