Integrate LFX header

[joanagmaia]

Changes proposed ✍️

What

🤖 Generated by Copilot at ae11529

This pull request adds a new LFX header component to the frontend of the application, and removes or simplifies some components and code related to the previous authentication and profile editing functionality. The LFX header component provides a consistent navigation and branding across different LFX products, and integrates with the Auth0 service for user authentication and profile management. The pull request affects several files in the frontend/src directory, as well as the frontend/index.html file.
​

🤖 Generated by Copilot at ae11529

LFX header added
Auth0Service improved
Winter code cleanup

Why

How

🤖 Generated by Copilot at ae11529

• Add LFX header component to the application to provide consistent navigation and branding across LFX products (link, link, link, link, link, link, link, link, link, link)
• Remove unused or redundant components and routes related to user profile, sign-in, and account options, as they are handled by the LFX header component (link, link, link, link, link, link, link, link, link, link, link, link)
• Remove unnecessary console.log statement from auth-service.js (link)
• Remove empty line from auth-guard.js (link)

Checklist ✅

• Label appropriately with Feature, Improvement, or Bug.
• Add screehshots to the PR description for relevant FE changes
• New backend functionality has been unit-tested.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.