"instructions" parameter for `SpeechRequest`s with `gpt-4o-mini-tts` model

[pdeitel]

Hi Shashir,

Thanks again for your Simple-OpenAI library.

In the latest OpenAI API for creating speech, https://platform.openai.com/docs/api-reference/audio/createSpeech, there is an “instructions” parameter. This is new for use with the gpt-4o-mini-tts model. It appears this option is not available in your SpeechRequest builder.

Do you have any plans to add it? It allows requests to add instructions for controlling tone and style in the generated speech.

Best,
Paul