[New Site Design] Pulsar Reference + Pulsar CLI + Pulsar Configuration

[Anonymitaet]

Hi team,

We're implementing PIP 78: Generate Docs from Code Automatically and replacing brodocs with docsify.

Along with this change, 3 new sites will be created with the following design:

• Pulsar Reference - Home Page: Design
• Pulsar CLI tools Page: Design
• Pulsar Configuration Page: Design + Mockup

Does this look good to you? Any suggestions? Thank you!

/ cc @urfreespace @SignorMercurio