feat: Add IT Support catalog and related migrations, seeders, and email templates

- Created migration to add 'group_label' to 'product_type_fields' table.
- Implemented ItSupportCatalogSeeder to populate IT Support features and tiers.
- Added ProductCategorySeeder for initial product categories.
- Developed ProductMockupSeeder for mockup products in various categories.
- Introduced ProductTypeFieldSeeder to define fields for different product types.
- Created email templates for VPS service information and service renewal reminders.

app/Services/Customer/Concerns/ResolvesCustomer.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Services\Customer\Concerns;
+
+use App\Models\Customer;
+use App\Repositories\Customer\CustomerRepositoryInterface;
+
+/**
+ * @property-read CustomerRepositoryInterface $customerRepository
+ */
+trait ResolvesCustomer
+{
+    protected function resolveCustomer(string $uuid): Customer
+    {
+        $customer = $this->customerRepository->findBy('uuid', $uuid);
+
+        abort_if(!$customer, 404, "Can't find customer by UUID #{$uuid}");
+
+        return $customer;
+    }
+}