[Feature Request] Support for ready-to-use GPT3.5

[chaojian-zhang]

Irrelevant Remarks

Great library by the way, and as someone who does not like to deal with REST APIs, having it exposed as native methods makes my code cleaner.

Is your feature request related to a problem? Please describe.

According to official API doc and Engadget news, ChatGPT's model is officially available as of today (2023.03.01). It would be nice if this library can support the corresponding names for the completion API.

Describe the solution you'd like

I think there should be minimal API change - essentially adding an enumeration. This feature request only concerns the completion API.

Describe alternatives you've considered

I tried to make a fork but the ModelNameBuilder programming model is a bit confusing to me so I will leave this feature implementation to the original author😂

Additional context

[Frogley]

It's on the way

[kayhantolga]

Sorry about ModelNameBuilder, it's a bit messy but It is really hard to follow OpenAI naming rules :D however, check version 6.7.0