Update API for chattype (#91)

* update apis for Chat type

* add azure api

* add azure api

* restore old response

* simplify azure

* fix azure config

* remove stream

Author: RexWzh

chattool/core/__init__.py

@@ -1,2 +1,4 @@
-from chattool.core.config import Config, OpenAIConfig
-from chattool.core.request import HTTPClient, OpenAIClient
+from chattool.core.config import Config, OpenAIConfig, AzureOpenAIConfig
+from chattool.core.request import HTTPClient, OpenAIClient, AzureOpenAIClient
+from chattool.core.response import ChatResponse
+from chattool.core.chattype import Chat