feat/idea: implement a badge system

[glaucia86]

🔹 2. Create an "Achievements" System

To encourage learning and engagement, we can implement a symbolic rewards system, similar to achievements in games.

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• Introduce visual badges that can be unlocked as users progress.
• Example of a badge in the README:

![Badge: Lighthouse Architect](https://img.shields.io/badge/🏆-Lighthouse%20Architect-blue)

• Possible achievements:

  • 🏆 "Time Traveler" – Complete the first lesson.
  • 🔦 "Lighthouse Architect" – Build the first optimized prompt.
  • 🤖 "AI Whisperer" – Improve an LLM response with a refined prompt.

✅ Impact: Encourages progression and motivates users to complete challenges.