fix: expose ClickHouse HTTP port via NodePort for remote access

Add cameleer-clickhouse-external Service (NodePort 30123) matching the
pattern used by cameleer-postgres-external (NodePort 30432).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

deploy/cameleer-clickhouse.yaml

@@ -109,6 +109,21 @@ spec:
       name: native
 ---
 apiVersion: v1
+kind: Service
+metadata:
+  name: cameleer-clickhouse-external
+  namespace: cameleer
+spec:
+  type: NodePort
+  selector:
+    app: cameleer-clickhouse
+  ports:
+    - port: 8123
+      targetPort: 8123
+      nodePort: 30123
+      name: http
+---
+apiVersion: v1
 kind: ConfigMap
 metadata:
   name: cameleer-clickhouse-config