Supporting async queries

[tonyjayfunk]

I'm aware that you utilize OKhttp internally for making requests and that retryUtils handles multiple retry attempts. It would be beneficial to introduce a feature that allows control over this process, and potentially offer an asynchronous mode that returns completionStages when applicable.

[LucBerge]

Hello @tonyjayfunk I use https://github.com/ai-for-java/openai4j#asynchronously-1 in Android. Working fine

[namankhurpia]

@tonyjayfunk you can also use - https://github.com/namankhurpia/Easy-open-ai these support asynchronous for android