Docs index page rework

[dayhaysoos]

Based on the conclusion of #348, we're looking to have a more customized index page for the/docs. To do this, we decided we'll be relying on a regular React component for that page, instead of Markdown.

Biggest inspiration is Expo docs:

https://docs.expo.dev/

Unfortunately, Docusaurus doesn't allow for the index page to be anything other than a Markdown file. To work around this, I'll be making a React component to be the pages content and importing it in the index markdown file to have the desired look and feel.

[angiejones]

is this still relevant or can we close?