Support Retrieve model API (sashabaranov#340) (sashabaranov#341)

* Support Retrieve model API (sashabaranov#340)

* Test for GetModel error cases. (sashabaranov#340)

* Reduce the cognitive complexity of TestClientReturnsRequestBuilderErrors (sashabaranov#340)

move marshaller and unmarshaler into internal pkg (sashabaranov#304) (s…

…ashabaranov#325)

change azure engine config to modelMapper (sashabaranov#306)

* change azure engine config to azure modelMapper config

* Update go.mod

* Revert "Update go.mod"

This reverts commit 78d14c5.

* lint fix

* add test

* lint fix

* lint fix

* lint fix

* opt

* opt

* opt

* opt

maintain underlying error structs to allow for type conversion (sasha…

…baranov#293)

* maintain underlying error structs to allow for type conversion and
defensive error checking

* allow Error.Is for Azure responses

* update readme, add tests to ensure type conversion

* fix whitespacing

* read me

* add import to readme example

Azure openai list models (sashabaranov#290)

* feat(models): include flow for azure openai endpoint

* feat(models): include flow for azure openai endpoint

* feat(models): include flow for azure openai endpoint

* chore(fullURL): update logic to run in fullURL function

* chore(fullURL): update based on pr comments to use c.config.APIVersion

fix expected error message (sashabaranov#289)

fix: chat stream resp error (sashabaranov#259)

Implement Unmarshaller interface. Resolves sashabaranov#244 (sashabar…

…anov#248)

Update README.md with Azure OpenAI ChatGPT example (sashabaranov#239)

Co-authored-by: coggsflod <[email protected]>

to fix v1.5.8 Usage return (sashabaranov#223)

* add ChatCompletionStream Usage return

* ChatCompletionStreamResponse will bot return Usage

* remove the Usage field from the response, it would not be there anyway.

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Co-authored-by: lihang <[email protected]>