Module metrics 

Metrics and monitoring for EVM operations

This module provides:

• Performance metrics tracking
• RPC call statistics
• Transaction success/failure rates
• Gas price tracking
• Prometheus-compatible metrics export

Structs

GasMetrics

Metrics for gas prices

GasPriceSnapshot

Gas price tracking

MetricsCollector

Comprehensive metrics collector

RpcMetrics

Metrics for RPC calls

TransactionMetrics

Metrics for transactions