[Feature Request] 增加自定义模型服务商

[LiMinghan1220]

🥰 需求描述

模型兼容自定义

🧐 解决方案

希望在模型服务商可使用户自行可多开几个兼容OpenAI的以使用未兼容模型（阶跃星辰等）。

📝 补充信息

No response

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Title: [Feature Request] Add custom model service provider

🥰 Description of requirements

Model compatible with customization

🧐 Solution

It is hoped that the model service provider can enable users to open more OpenAI-compatible models to use incompatible models (step stars, etc.).

📝 Supplementary information

No response