feat(ingress): add detection pipeline config and metrics port

- Add DDoS, scanner, and rate limiter configuration to pingora-config
- Add kubernetes config section with configurable namespace/resource names
- Expose metrics port 9090 on deployment and service

base/ingress/pingora-service.yaml

@@ -16,6 +16,10 @@ spec:
       port: 443
       targetPort: 443
       protocol: TCP
+    - name: metrics
+      port: 9090
+      targetPort: 9090
+      protocol: TCP
     - name: turn-udp
       port: 3478
       targetPort: 3478