Python: OpenAI Assistants Chat Client and Agent (#288)

* Initial version of assistant client

* More updates to assistant client

* Finished assistant chat client implementation

* Small fixes and basic example

* Added code interpreter example

* More examples

* Added chat client example

* Small fixes

* Added tests

* Enabled telemetry

* Small fix

* Removed files temporarily

* Revert "Removed files temporarily"

This reverts commit 5cdfa0d299.

* Small fixes

* Addressed PR feedback

* Fixed tests

* Small update

python/packages/foundry/tests/test_foundry_chat_client.py

@@ -45,6 +45,7 @@ def create_test_foundry_chat_client(
         thread_id=thread_id,
         _should_delete_agent=should_delete_agent,
         _foundry_settings=foundry_settings,
+        credential=None,
     )
 
 
@@ -95,6 +96,7 @@ def test_foundry_chat_client_init_auto_create_client(
         thread_id=None,
         _should_delete_agent=False,
         _foundry_settings=foundry_settings,
+        credential=None,
     )
 
     assert chat_client.client is mock_ai_project_client