Add scalability_info field to ClusterState (#84)

Add a field which indicates whether the cluster can be scaled up or down.

Author: Toni Reina

gen/go/qdrant/cloud/cluster/v1/cluster.pb.go

@@ -765,6 +765,30 @@
       "default": "CLUSTER_PHASE_UNSPECIFIED",
       "description": "Defines the operational or transitional state of the Qdrant cluster.\n\n - CLUSTER_PHASE_UNSPECIFIED: The phase is unknown or not specified. Should not normally be used.\n - CLUSTER_PHASE_CREATING: The cluster is currently being created.\n - CLUSTER_PHASE_FAILED_TO_CREATE: The cluster creation process failed.\n - CLUSTER_PHASE_UPDATING: The cluster configuration is being updated.\n - CLUSTER_PHASE_FAILED_TO_UPDATE: The cluster update process failed.\n - CLUSTER_PHASE_SCALING: The cluster is undergoing scaling (up or down).\n - CLUSTER_PHASE_UPGRADING: The Qdrant version in the cluster is being upgraded.\n - CLUSTER_PHASE_SUSPENDING: The cluster is in the process of being suspended.\n - CLUSTER_PHASE_SUSPENDED: The cluster is currently suspended (inactive).\n - CLUSTER_PHASE_FAILED_TO_SUSPEND: The cluster suspension process failed.\n - CLUSTER_PHASE_RESUMING: The cluster is resuming from a suspended state.\n - CLUSTER_PHASE_FAILED_TO_RESUME: The cluster resumption process failed.\n - CLUSTER_PHASE_HEALTHY: The cluster is operational and healthy.\n - CLUSTER_PHASE_NOT_READY: The cluster is operational but not all components are ready or healthy.\n - CLUSTER_PHASE_RECOVERY_MODE: The cluster is in recovery mode, potentially after a failure.\n - CLUSTER_PHASE_MANUAL_MAINTENANCE: The cluster is under manual maintenance.\n - CLUSTER_PHASE_FAILED_TO_SYNC: There was an error syncing the cluster in the cloud provider region.\n - CLUSTER_PHASE_NOT_FOUND: The cluster was expected but not found in the cloud provider region."
     },
+    "v1ClusterScalabilityInfo": {
+      "type": "object",
+      "properties": {
+        "status": {
+          "$ref": "#/definitions/v1ClusterScalabilityStatus",
+          "description": "The current scalability status of the cluster."
+        },
+        "reason": {
+          "type": "string",
+          "description": "Optional human-readable reason providing more context about the scalability status.\nWhen a cluster is not scalable, this field explains why."
+        }
+      },
+      "title": "ClusterScalabilityInfo provides information about the"
+    },
+    "v1ClusterScalabilityStatus": {
+      "type": "string",
+      "enum": [
+        "CLUSTER_SCALABILITY_STATUS_UNSPECIFIED",
+        "CLUSTER_SCALABILITY_STATUS_NOT_SCALABLE",
+        "CLUSTER_SCALABILITY_STATUS_SCALABLE"
+      ],
+      "default": "CLUSTER_SCALABILITY_STATUS_UNSPECIFIED",
+      "description": "ClusterScalabilityStatus defines the scalability states of a cluster.\n\n - CLUSTER_SCALABILITY_STATUS_UNSPECIFIED: Scalability status is unspecified.\n - CLUSTER_SCALABILITY_STATUS_NOT_SCALABLE: The cluster is not scalable.\n - CLUSTER_SCALABILITY_STATUS_SCALABLE: The cluster supports scaling operations."
+    },
     "v1ClusterState": {
       "type": "object",
       "properties": {
@@ -797,6 +821,10 @@
         "resources": {
           "$ref": "#/definitions/v1ClusterNodeResourcesSummary",
           "title": "The resources used by the cluster per node.\nFor the complete cluster you have to multiply by cluster.configuration.number_of_nodes"
+        },
+        "scalabilityInfo": {
+          "$ref": "#/definitions/v1ClusterScalabilityInfo",
+          "description": "Whether the cluster can be scaled up or down."
         }
       },
       "description": "ClusterState represents the current state of a cluster\nAll fields in this message are read-only."