chore(resmgr): move cluster-scoped types out of the blueprint files

Removing vm_high_availability / auto_resource_rebalancing from
pcd_cluster_blueprint (v0.1.6) left rebalanceAPI unreferenced, which
golangci-lint's `unused` check flags on main. haAPI, haAttrTypes and
rebalanceAttrTypes are still live but belong to pcd_cluster, not the
blueprint; relocate them beside their siblings in cluster_resource.go
and drop the dead type. No behavior change; build, vet, unit tests and
golangci-lint 2.12.2 (the CI version) all pass.

Author: PF9-pushkar

internal/services/resmgr/blueprint_data_source.go

@@ -59,16 +59,6 @@ type blueprintAPI struct {
 	StorageBackends json.RawMessage `json:"storageBackends"`
 }
 
-type haAPI struct {
-	Enabled bool `json:"enabled"`
-}
-
-type rebalanceAPI struct {
-	Enabled                  bool   `json:"enabled"`
-	RebalancingStrategy      string `json:"rebalancingStrategy"`
-	RebalancingFrequencyMins int64  `json:"rebalancingFrequencyMins"`
-}
-
 type virtualNetworkingAPI struct {
 	Enabled      bool   `json:"enabled"`
 	UnderlayType string `json:"underlayType"`

internal/services/resmgr/blueprint_resource.go

@@ -52,16 +52,6 @@ type blueprintResourceModel struct {
 	StorageBackendsJSON       types.String `tfsdk:"storage_backends_json"`
 }
 
-var haAttrTypes = map[string]attr.Type{
-	"enabled": types.BoolType,
-}
-
-var rebalanceAttrTypes = map[string]attr.Type{
-	"enabled":                    types.BoolType,
-	"rebalancing_strategy":       types.StringType,
-	"rebalancing_frequency_mins": types.Int64Type,
-}
-
 func (r *blueprintResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
 	resp.TypeName = req.ProviderTypeName + "_cluster_blueprint"
 }

internal/services/resmgr/cluster_resource.go

@@ -45,6 +45,16 @@ type clusterModel struct {
 	CPU                     types.Object `tfsdk:"cpu"`
 }
 
+var haAttrTypes = map[string]attr.Type{
+	"enabled": types.BoolType,
+}
+
+var rebalanceAttrTypes = map[string]attr.Type{
+	"enabled":                    types.BoolType,
+	"rebalancing_strategy":       types.StringType,
+	"rebalancing_frequency_mins": types.Int64Type,
+}
+
 var clusterGPUAttrTypes = map[string]attr.Type{
 	"enabled": types.BoolType,
 	"mode":    types.StringType,
@@ -77,6 +87,10 @@ type clusterRebalanceAPI struct {
 	RebalancingFrequencyMins *int64  `json:"rebalancingFrequencyMins,omitempty"`
 }
 
+type haAPI struct {
+	Enabled bool `json:"enabled"`
+}
+
 type clusterGPUAPI struct {
 	Enabled bool   `json:"enabled"`
 	Mode    string `json:"mode"`