add redis cluster transport support

Author: zhousheng06

kombu/transport/__init__.py

@@ -45,6 +45,7 @@ def supports_librabbitmq() -> bool | None:
     'azureservicebus': 'kombu.transport.azureservicebus:Transport',
     'pyro': 'kombu.transport.pyro:Transport',
     'gcpubsub': 'kombu.transport.gcpubsub:Transport',
+    'rediscluster': 'kombu.transport.rediscluster:Transport',
 }
 
 _transport_cache = {}