Added two new apis

Co-authored-by: Copilot <copilot@github.com>

METRICS_API_EXAMPLES.md

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+# Metrics API Examples
+
+## Registrar métrica manualmente
+```bash
+curl -X POST "http://localhost:8004/metrics/record" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "event_type": "user_created",
+    "entity_id": "123",
+    "entity_type": "user",
+    "user_id": 456,
+    "metadata": {"email": "user@example.com"}
+  }'
+```
+
+## Obtener reporte de últimos 7 días
+```bash
+curl "http://localhost:8004/metrics/report?days=7"
+```
+
+## Obtener estadísticas de un día específico
+```bash
+curl "http://localhost:8004/metrics/daily-stats?date=2026-05-04T00:00:00"
+```
+
+## Obtener resumen de eventos en rango
+```bash
+curl "http://localhost:8004/metrics/summary?start_date=2026-04-27T00:00:00&end_date=2026-05-04T23:59:59"
+```
+
+## Health check
+```bash
+curl "http://localhost:8004/metrics/health"
+```
+
+## Eventos automáticos (RabbitMQ)
+El consumer de métricas escucha automáticamente eventos de:
+- Users Queue: `user_created`, `user_updated`, `user_deleted`
+- Reports Queue: `report_created`, `report_resolved`
+- Notifications Queue: `notification_sent`
+- Moderations Queue: `moderation_completed`