feat: Support rbac auth type in conversation_logger

[leonavevor]

Purpose

• To support rbac when conversation history is being saved

Does this introduce a breaking change?

• Yes
• No

How to Test

• Run it in devcontainer to test

git clone [[repo-address]](https://github.com/leonavevor/chat-with-your-data-solution-accelerator)
cd chat-with-your-data-solution-accelerator
git checkout main

• Test the code

code/tests/utilities/helpers/test_azure_search_helper.py => test_get_conversation_logger_rbac()

What to Check

Verify that the following are valid

• should be able to have your conversations saved even if you are not using key based auth (i.e using RBAC).

Other Information

[leonavevor]

@microsoft-github-policy-service agree