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-deployment.yaml

@@ -34,6 +34,9 @@ spec:
             - name: ssh
               containerPort: 22
               protocol: TCP
+            - name: metrics
+              containerPort: 9090
+              protocol: TCP
             - name: turn-udp
               containerPort: 3478
               protocol: UDP