WIP: OSS Prep

[transitive-bullshit]

starting from v2-mono branch

• got tests working
• minor improvements to package.json scripts for public usage
• added .env.example
• added GitHub CI
• added MIT license
• removed openai as a dependency via https://github.com/dexaai/openai-fetch/pull/33
• renamed hook => event **
• removed extraneous interfaces in favor of abstract base classes **
• misc minor fixes
• added docs via nextra, typedoc, and typedoc-plugin-markdown
  • here are some example docs deployed to vercel; the content is a WIP, but the auto-generated portions should give you an idea of what the final docs will look like

** will require some refactoring in Dexa

[transitive-bullshit]

@transitive-bullshit I think this is ready for a first-pass review. You can ignore all the auto-generated docs files in docs/pages/docs.