Support Attachments in MessageRequest (#890)

* add attachments in MessageRequest

* Move tools const to message

* remove const, just use assistanttool const

add chatcompletion stream delta refusal and logprobs (#882)

* add chatcompletion stream refusal and logprobs

* fix slice to struct

* add  integration test

* fix lint

* fix lint

* fix: the object should be pointer

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Co-authored-by: genglixia <genglixia@enjoypartytime.com>

Updated checkPromptType function to handle prompt list in completions (…

…#885)

* updated checkPromptType function to handle prompt list in completions

* removed generated test file

* added corresponding unit testcases

* Updated to use less nesting with early returns

fix: Updated Assistent struct with latest fields based on OpenAI docs (…

…#883)

Completion API: add Store and Metadata parameters (#878)

Adding new moderation model constants (#875)

Completion API: add new params (#870)

* Completion API: add 'store' param

This param allows you to opt a completion request in to being stored,
for use in distillations and evals.

* Add cached and audio tokens to usage structs

These have been added to the completions API recently:
https://platform.openai.com/docs/api-reference/chat/object#chat/object-usage

feat: usage struct add CompletionTokensDetails (#863)

feat: add ParallelToolCalls to RunRequest (#847)

add max_completions_tokens for o1 series models (#857)

* add max_completions_tokens for o1 series models

* add validation for o1 series models validataion + beta limitations