Add /profile page

[razorblade23]

This page should contain:

• Progress tracking for each individual student (localStorage)

• Dynamic Skill Tree - Mermaid.js based roadmap with custom color for "completed", "in progress" and "future" lessons

• GitHub verification - using GitHub actions to run tests and report back to Ledger for successful tests check

• Implement a "soft" modal that warns the learners if they skip the lessons. This should be checked against localStorage.
  Message should be in form of:

You've skipped ahead! We won't stop you, but these projects assume you've mastered X, Y, and Z. Good luck!"

• Implement "visual desaturation" on the sidebar: green for passed, orange for current and grey for feature leassons