Python: openai updates (#388)

* openai updates

* rebuild of openai structure

* updated responses structure

* renamed sample

* added file id support to code interpreter

* added hosted file ids to code interpretor

* mypy fixes

* removed default az cred from codebase

* updated agent name setup

* added kwargs to entra methods

* and further kwargs

* extra comment

* updated all samples

* readded custom get methods for responses

* updated int tests with ad credential

* missed one

python/samples/getting_started/agents/openai_assistants_client/openai_assistants_basic.py

@@ -4,7 +4,6 @@ import asyncio
 from random import randint
 from typing import Annotated
 
-from agent_framework import ChatClientAgent
 from agent_framework.openai import OpenAIAssistantsClient
 from pydantic import Field
 
@@ -23,8 +22,7 @@ async def non_streaming_example() -> None:
 
     # Since no assistant ID is provided, the assistant will be automatically created
     # and deleted after getting a response
-    async with ChatClientAgent(
-        chat_client=OpenAIAssistantsClient(),
+    async with OpenAIAssistantsClient().create_agent(
         instructions="You are a helpful weather agent.",
         tools=get_weather,
     ) as agent:
@@ -40,8 +38,7 @@ async def streaming_example() -> None:
 
     # Since no assistant ID is provided, the assistant will be automatically created
     # and deleted after getting a response
-    async with ChatClientAgent(
-        chat_client=OpenAIAssistantsClient(),
+    async with OpenAIAssistantsClient().create_agent(
         instructions="You are a helpful weather agent.",
         tools=get_weather,
     ) as agent: