Support OpenAI and xAI models #13
Description
The current implementation of ChatOCIGenAI is designed to support models from Cohere and Meta. As part of ongoing enhancements, the OCI Generative AI Service is introducing additional models from xAI and OpenAI. These new models adhere to the same API specifications as the Meta models; however, the existing implementation does not automatically determine the associated provider based on the model_id. While users can enable the new models by manually setting the provider to meta, improving the implementation to allow ChatOCIGenAI to automatically recognize the model_id and assign the appropriate provider will significantly enhance the user experience and streamline the integration process.