Enhance supplier report: add billing ID to pack specification details

Author: m-houston

packages/cli-supplier-reports/src/supplier-report.ts

@@ -1109,6 +1109,7 @@ export function generateVariantMappingCsv(
     "pack_specification_name",
     "pack_specification_status",
     "pack_specification_version",
+    "pack_specification_billing_id",
     "supplier_pack_id",
     "supplier_pack_approval",
     "supplier_pack_status",
@@ -1175,6 +1176,7 @@ export function generateVariantMappingCsv(
           packSpec.name,
           packSpec.status,
           String(packSpec.version),
+          packSpec.billingId ?? "UNKNOWN",
           supplierPack.id,
           supplierPack.approval,
           supplierPack.status,