Major documentation updates

[madjin]

Relates to:

Docs for Eliza, here is the demo: https://madjin.github.io/eliza/

Risks

• Need to change the docusaurus config for ai16z repo, currently configured for my fork
  • will update / work via branch on main repo instead

Background

What does this PR do?

Add documentation pages on almost every aspect of Eliza

What kind of change is this?

Improvements

Documentation changes needed?

It is documentation changes

Testing

Where should a reviewer start?

https://madjin.github.io/eliza/

Detailed testing steps

git clone [email protected]:ai16z/eliza.git
cd eliza/docs
npm install
npm run dev

in the docs folder, after configuring docusaurus config file for this repo:
USE_SSH=true npm run deploy

ensure settings are adjusted in repo settings also for github pages to work