Initial setup marketing website

added initial https://github.com/drunomics/lupus-decoupled-website setup, content take over is todo.
the old site is private, at https://github.com/drunomics/lupus-digital-stack-docs

https://lupus-decoupled-website.pages.dev - the first skeleton and content for the frontpage is there, ready for review.

finished structure and started with how-it-works page

https://lupus-decoupled.org is online! Details need work, which is documented in the TODO.md file.

Automatically closed - issue fixed for 2 weeks with no activity.