Add feature tests for domain order management

- Implement AdminDomainOrderTest to cover admin functionalities for domain orders including listing, confirming registration, KYC updates, activation, rejection, and refunds.
- Implement ClientDomainOrderTest to cover client functionalities for placing domain orders, including validation for balance, duplicate orders, and domain normalization.
- Ensure proper handling of domain pricing and service statuses throughout the tests.

app/Enums/Domain/DomainProvisioningStatus.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Enums\Domain;
+
+enum DomainProvisioningStatus: string
+{
+    case PENDING           = 'pending';
+    case REGISTRAR_CREATED = 'registrar_created';
+    case PENDING_KYC       = 'pending_kyc';
+    case ACTIVE            = 'active';
+    case CANCELLED         = 'cancelled';
+    case REFUNDED          = 'refunded';
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::PENDING           => 'Chờ xử lý',
+            self::REGISTRAR_CREATED => 'Đã tạo tại nhà đăng ký',
+            self::PENDING_KYC       => 'Chờ xác minh KYC',
+            self::ACTIVE            => 'Đang hoạt động',
+            self::CANCELLED         => 'Đã hủy',
+            self::REFUNDED          => 'Đã hoàn tiền',
+        };
+    }
+
+    /** Valid forward transitions. */
+    public function canTransitionTo(self $next): bool
+    {
+        return match ($this) {
+            self::PENDING           => in_array($next, [self::REGISTRAR_CREATED, self::PENDING_KYC, self::REFUNDED]),
+            self::REGISTRAR_CREATED => in_array($next, [self::PENDING_KYC, self::ACTIVE, self::CANCELLED]),
+            self::PENDING_KYC       => in_array($next, [self::ACTIVE, self::CANCELLED]),
+            self::ACTIVE            => in_array($next, [self::CANCELLED]),
+            self::CANCELLED,
+            self::REFUNDED          => false,
+        };
+    }
+}