Header redesign

[Mil4n0r]

Checklist (Check off all the items before submitting)

• [ ] Build process is done without errors. All tests pass in the /lib directory.
• [ ] Self-reviewed the code before submitting.
• [ ] Meets accessibility standards.
• [ ] Added/updated documentation to /website as needed.
• [ ] Added/updated tests as needed.

Description Redesign of the header component following the new design kit specifications, already using the new token architecture (CSS variables).

Additional context

• Figma designs

[Mil4n0r]

Still have some TODOs which require designer feedback. Also missing doc and API updates for logo.