[Feature Request] Prompty: export Exception types and original exception

[ianchi]

Is your feature request related to a problem? Please describe.
Original OpenAI Exceptions are wrapped in new types, but the types are not exported, and so you cannot catch specific error without importing private member

Describe the solution you'd like
Export ExceedMaxRetryTimes and in all other cases the original exception.

Describe alternatives you've considered
Directly raise the original exception. I'm not sure what is the value of raising WrappedOpenAIError, which is much more difficult to letar distinguish between subtypes and breaks the standard except ExceptionType approach.

You also loose some detail information as there is no way of accessing the original exception, unless accessing private members.

[github-actions]

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[ianchi]

Hi, any comments on this?