🎸 feat: New documentation in form of docusaurus website

[jsimck]

Proposed migration to docusaurus from current custom solution for ima website:

Main motivation

• the current documentation files are quite cluttered and no one really knows how it's actually built.
• since whole monorepo is written in JS, not many people are able to serve the documentation locally to validate changes thorugh jekyll.
• currently we have to maintain custom styles and markup, docusaurus would leave us focus just on writing actual documentation md files.
• Support for algolia search though plugins without too much hastle.
• Easier maintenance of the documentation website.