Implement Core Rust Verification Server

[am-miracle]

Description:

The smart contracts reference a verification server that needs to be implemented in Rust. This is critical for the social media NFT verification and asset authenticity checks.

Requirements:

• Implement ECDSA signature verification for social media NFT minting
• Create API endpoints for asset verification (Twitch, Instagram, X, Google Analytics)
• Implement secure key management for signing verification messages
• Add rate limiting and authentication for API endpoints
• Create a database schema for storing verification records
• Implement a caching layer for API responses

##Technical Specifications:

// Core verification service structure
pub struct VerificationService {
    private_key: Secp256k1PrivateKey,
    api_clients: HashMap<Platform, Box<dyn ApiClient>>,
    cache: RedisCache,
    db: Database,
}

// API endpoints needed:
// POST /api/v1/verify/social-media
// POST /api/v1/verify/website
// POST /api/v1/verify/domain
// GET /api/v1/verification/{id}/status

Acceptance Criteria:

[ ] ECDSA signature generation and verification working
[ ] Integration with Twitch Helix API
[ ] Integration with Instagram Graph API
[ ] Integration with X (Twitter) API
[ ] Integration with Google Analytics API
[ ] Rate limiting implemented
[ ] Authentication middleware
[ ] Database schema for verification records
[ ] Comprehensive error handling
[ ] Unit and integration tests