Make it easier to browse the SDK docs

[cfjedimaster]

Description of the feature request:

I'm trying to look up a particular feature of the Node SDK, and there doesn't seem to be a direct link, by that I mean, if I go here:

https://github.com/google-gemini/generative-ai-js

The Documentation section in the readme links to the cookbook and the main site, it is not the docs for the SDK itself.

If I dig around, I can find https://github.com/google-gemini/generative-ai-js/blob/main/docs/reference/main/index.md, which lets me browse the SDK docs as I'd expect, but I think it should be simpler to get to.

What problem are you trying to solve with this feature?

As it stands, I'm trying to find docs on the GoogleAIFIleManager interface and struggling, but I'm sure I'll get there.

Any other information you'd like to share?

No response