Improve documentation (#82)

* Propose new doc architecture

* Many improvements to documentation (styling, structure...)

* Remove modules added inadvertently + continue improving styling

* Swizzle navbar item to add support for custom icon

* Additional doc styling

* Setup docs for API and redirect homepage for docs

docs/sidebars.js

@@ -14,8 +14,7 @@
 /** @type {import('@docusaurus/plugin-content-docs').SidebarsConfig} */
 const sidebars = {
   docsSidebar: [{type: 'autogenerated', dirName: 'dev-docs'}],
-  userGuideSidebar: [{type: 'autogenerated', dirName: 'user-guide'}],
-  APISidebar: [{type: 'autogenerated', dirName: 'api'}],
+  userGuideSidebar: [{type: 'autogenerated', dirName: 'user-guide'}]
 };
 
 module.exports = sidebars;