text: Title: Support OpenAI API v1
  Body: ### 🚀 The feature
  
  Add support for the newest version of the API.
  
  ### Motivation, pitch
  
  The old `openai.ChatCompletion` has been replaced by `openai.OpenAI.chat.completions` (a factual class) and `openai.AzureOpenAI.chat.completions` for Azure.
  
  **PR coming soon!**