improve: introduce isort for linting Python imports (#1983)

api/core/moderation/api/api.py

@@ -1,10 +1,9 @@
-from pydantic import BaseModel
-
-from core.moderation.base import Moderation, ModerationInputsResult, ModerationOutputsResult, ModerationAction
-from core.extension.api_based_extension_requestor import APIBasedExtensionRequestor, APIBasedExtensionPoint
+from core.extension.api_based_extension_requestor import APIBasedExtensionPoint, APIBasedExtensionRequestor
 from core.helper.encrypter import decrypt_token
+from core.moderation.base import Moderation, ModerationAction, ModerationInputsResult, ModerationOutputsResult
 from extensions.ext_database import db
 from models.api_based_extension import APIBasedExtension
+from pydantic import BaseModel
 
 
 class ModerationInputParams(BaseModel):

api/core/moderation/base.py

@@ -1,9 +1,9 @@
 from abc import ABC, abstractmethod
-from typing import Optional
-from pydantic import BaseModel
 from enum import Enum
+from typing import Optional
 
 from core.extension.extensible import Extensible, ExtensionModule
+from pydantic import BaseModel
 
 
 class ModerationAction(Enum):

api/core/moderation/keywords/keywords.py

@@ -1,4 +1,4 @@
-from core.moderation.base import Moderation, ModerationInputsResult, ModerationOutputsResult, ModerationAction
+from core.moderation.base import Moderation, ModerationAction, ModerationInputsResult, ModerationOutputsResult
 
 
 class KeywordsModeration(Moderation):

api/core/moderation/openai_moderation/openai_moderation.py

@@ -1,6 +1,6 @@
 from core.model_manager import ModelManager
 from core.model_runtime.entities.model_entities import ModelType
-from core.moderation.base import Moderation, ModerationInputsResult, ModerationOutputsResult, ModerationAction
+from core.moderation.base import Moderation, ModerationAction, ModerationInputsResult, ModerationOutputsResult
 
 
 class OpenAIModeration(Moderation):