feat(core): More AWEL operators and new prompt manager API (#972)

Co-authored-by: csunny <cfqsunny@163.com>

dbgpt/core/interface/cache.py

@@ -1,8 +1,7 @@
 from abc import ABC, abstractmethod
-
-from typing import Any, TypeVar, Generic, Optional
 from dataclasses import dataclass
 from enum import Enum
+from typing import Any, Generic, Optional, TypeVar
 
 from dbgpt.core.interface.serialization import Serializable