Integrate Factool into other chatbots (not just chatgpt)

[pfliu-nlp]

So far, we can integrate factool into chatgpt through chatgpt plugin, this is good. It would be better if we can make factool being easily integrated into other opensourced chatbots.

Specifically, we may need to consider two following situations: (1) how to introduce factool into chatbots without plugin functionality (2) how to introduce factool into plugin-enabled chatbots