Add Pharos Raffle - Provably Fair Raffle System Powered by Pyth Entropy

[blockwiz05]

Overview

This PR introduces Pharos Raffle, a complete decentralized raffle system that demonstrates Pyth Entropy integration for provably fair winner selection.

Key Features:

• 🎫 Create raffles with custom parameters (prize type, ticket price, duration, etc.)
• 🎲 Provably fair randomness using Pyth Entropy
• 💰 Support for PYUSD token prizes
• 🏆 Leaderboard showing top participants
• 👤 User profile pages with raffle history
• 📱 Responsive design for mobile and desktop
• 🔄 Real-time updates via React Query

How It Works

1. Admin can create raffles with custom parameters
2. Participants buy PYUSD-backed tickets
3. Raffle closes automatically (time/max tickets reached)
4. Contract requests randomness from Pyth Entropy
5. Winner selected using weighted ticket distribution
6. Prize distributed to winner

Deployment

Configured for Blast Arbitrum sepolia testnet. Can be adapted for any EVM network supporting Pyth Entropy.