performance method
Log performance metrics
Implementation
void performance(String metric, double value,
{Map<String, dynamic>? metadata}) {
final enrichedMetadata = metadata ?? <String, dynamic>{};
enrichedMetadata['metric'] = metric;
enrichedMetadata['value'] = value;
enrichedMetadata['type'] = 'performance';
_log(LogLevel.info, '$metric: $value', metadata: enrichedMetadata);
}