LlamaIndex Azure OpenAI LLM Integration

This integration package allows LlamaIndex to utilize Azure OpenAI's Large Language Model (LLM) services. It provides a robust way to connect to and interact with models like GPT-3.5 and GPT-4 deployed on Azure, leveraging LlamaIndex's indexing and querying capabilities. The current version is 0.5.3, with its release cadence tied to updates in the core LlamaIndex library and Azure OpenAI API changes.