Add more model support for AI continuation

[mzwing]

• Baidu Qianfan Platform
• iFlytek's Xing Huo LLM
• text-generation-webui API
• Google Bard (maybe)
• New Bing (maybe)
• HuggingChat (maybe)

[mzwing]

@baiyuanneko Could you add Baidu's Ernie Bot api support? I find it too hard for me to implement this since it didn't have a proper class or function like aiAssistedWritingConfigDialog.

[baiyuanneko]

I have modified the code, makes it easier to add support for more LLM APIs.

It can be seen in /App/ai_function.js for details. To add support for a new LLM API, it is needed to write a class that has these functions: requestTextCompletions, requestTextImprove and requestTextSummary. For an example, you can see /App/ai_function_openai.js.

[mzwing]

Now support ALL LLMs in Baidu Qianfan Platform with commit a35416d. 🎉

However, you should check the comment in the code to get some information with this feature, since Baidu Qianfan Platform is so complex. 😵

[mzwing]

Since Poe actually does not provide the API Gateway to chat with the LLMs hosted on it, I deleted the plan of supporting it.