[Feature] Add support for the xAI Grok 3 API

[sunnyhmz7010]

MaxKB Version

不涉及

Please describe your needs or suggestions for improvements

请添加对xAI Grok 3 API的支持

Please describe the solution you suggest

No response

Additional Information

No response

[liqiang-fit2cloud]

xAI Grok 3支持兼容openai的接口，用openai方式连接即可。

[shaohuzhang1]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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xAI Grok 3 supports openai-compatible interfaces, and can be connected by openai.