docs: create Lumberjack documentation website

[NachoVazquez]

The Problem

Lumberjack doesn't have a proper documentation website.

The Goal

Create a Lumberjack documentation website like the spectacular one.

Tasks

• [ ] Create and configure Docusaurus documentation website
• [ ] Deploy to Github Pages
• [ ] Configure CI/CD
• [ ] Write proper documentation using the tools format

[LayZeeDK]

See spectacular-docs for a complete Docusaurus and GitHub Pages setup.