Add Analytics and Usage Tracking

[CipherYuvraj]

Implement privacy-respecting analytics to understand user behavior, popular algorithms, and platform usage patterns.

🎯 Requirements

• Add basic usage analytics (page views, algorithm executions)
• Track algorithm popularity and performance metrics
• Implement user session tracking (anonymous)
• Create analytics dashboard for maintainers
• Ensure GDPR compliance and user privacy
• Add optional user feedback collection

✅ Acceptance Criteria

• Analytics backend service implemented
• Algorithm usage statistics tracked
• Session duration and user flow analytics
• Privacy-compliant data collection
• Analytics dashboard with key metrics
• Data export functionality for insights
• User consent mechanism implemented
• Analytics data visualization charts

🛠️ Technical Details

# Analytics event structure:
{
  "event_type": "algorithm_execution",
  "algorithm": "quicksort",
  "input_size": 50,
  "execution_time": 1.2,
  "user_session": "anonymous_hash",
  "timestamp": "2025-10-03T10:30:00Z"
}

📚 Helpful Resources

• Privacy-First Analytics
• GDPR Compliance Guide
• FastAPI Analytics Patterns

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[D43M0N18]

@CipherYuvraj /assign