[WIP] support latest openai client (#8712)

CHANGELOG.md

docs/examples/customization/llms/AzureOpenAI.ipynb

docs/examples/llm/azure_openai.ipynb

docs/examples/llm/openai.ipynb

experimental/openai_fine_tuning/launch_training.py

llama_index/embeddings/__init__.py

llama_index/embeddings/azure_openai.py

llama_index/embeddings/openai.py

llama_index/finetuning/openai/base.py

llama_index/llms/azure_openai.py

llama_index/llms/konko_utils.py

llama_index/llms/litellm_utils.py

llama_index/llms/openai.py

llama_index/llms/openai_utils.py

poetry.lock

pyproject.toml

tests/agent/openai/test_openai_agent.py

tests/conftest.py

tests/embeddings/test_base.py

tests/llms/test_localai.py