Create a landing page for the binaries download website

The current website has no UI. This scares users. This is not really intuitive for non-developers.

This is not meant for endusers, but still, we should propose a nicer simple interface. I am thinking of something like PyPi, but even simpler/purified:

• we only need to show links for a given version: download link + checksum value (with possibility to copy to clipboard)
• we have 3 types of release: Release, Beta, Alpha
• there is a global YML file containing all the required data: https://community.nuxeo.com/static/drive-updates/versions.yml

Constraints:

• Nothing dynamic, only a simple HTML page.
• The page should be very light, ie no big JS bundles, only vannila JS to async load the versions.yml.