add migration

src/main/resources/db/migration/common/V1.8.0_20250527_1530__AddConnectionToCluster.sql

+ALTER TABLE kubernetes_nm_service_info
+ADD COLUMN kcluster_id integer;
+
+ALTER TABLE kubernetes_nm_service_info
+ADD CONSTRAINT fk_kubernetes_nm_service_info_kcluster
+FOREIGN KEY (kcluster_id)
+REFERENCES kcluster (id)
+ON DELETE SET NULL;
+
+ALTER TABLE app_deployment
+ADD COLUMN remote_cluster_id integer;
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