Sidebar: try to group the pages by type ( classes, modules... )

[asturur]

Notes:

Tsdocs as they are now are not useful, we should at least:

• hide the information of the parent class -> found a solution
• improve readability of documents
• add toc links
• remove '.md' from links

[ShaMan123]

• hide the information of the parent class

I think I saw something about this in the typedoc config itself

[asturur]

Found a plugin to hide inheritance: fabricjs/fabric.js#9486

[asturur]

Changed how left bar works for apiDocs template.
Still not functional but easier on the eyes.
That will require just a different component, i can't monkeypatch the current one.