added a gamification XP feature for user retention

[codewithakshyaaa]

Description

This PR implements the core architecture for the Gamification & Progress Tracking system. It introduces a global real-time state manager to track and stream user milestones, points, and engagement metrics directly from Firebase Firestore.

🛠️ What's Changed?

• Added GamificationContext.tsx: Created a dedicated context provider that listens to real-time changes in the user's gamification profile.
• Integrated with Root Layout: Wired <GamificationProvider> inside src/app/layout.tsx nested correctly under <AuthProvider> to fetch data safely after authentication.
• Database Hooks: Exposed the custom useGamification hook to consume XP, learning streaks, and unlocked badges across any frontend page or view.
  Fixes [FEATURE] : Add Gamification & Progress Tracking System #461

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Local testing
• Vercel Preview Deployment

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings or errors
• I have checked that the "DevPath India" branding remains intact

[codewithakshyaaa]

hi @Aditya948351 kindly review this PR

[Aditya948351]

LGTM! Approved. Great work on this.

[codewithakshyaaa]

LGTM! Approved. Great work on this.

Thankyou sir. Looking forward to more contributions!!