Make the extension (or a part of it) run on vscode web

[haikyuu]

This is very useful for people exploring the code by clicking . on Imba repos.

In the last VSCode release, they released a guide for authoring or updating existing extensions. https://code.visualstudio.com/api/extension-guides/web-extensions

This should be pretty straightforward

TODO:

• Remove references to require/import other than from vscode (path, chroma and fs)