Remove circular import

Author: andystaples

durabletask/entities/durable_entity.py

@@ -1,6 +1,7 @@
 from typing import Any, Optional, Type, TypeVar, overload
 
-from durabletask.entities import EntityContext, EntityInstanceId
+from durabletask.entities.entity_context import EntityContext
+from durabletask.entities.entity_instance_id import EntityInstanceId
 
 TState = TypeVar("TState")
 

durabletask/entities/entity_context.py

@@ -1,7 +1,7 @@
 
 from typing import Any, Optional, Type, TypeVar, overload
 import uuid
-from durabletask.entities import EntityInstanceId
+from durabletask.entities.entity_instance_id import EntityInstanceId
 from durabletask.internal import helpers, shared
 from durabletask.internal.entity_state_shim import StateShim
 import durabletask.internal.orchestrator_service_pb2 as pb