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.

database/migrations/2026_08_25_100000_add_new_types_to_product_categories_table.php

@@ -0,0 +1,20 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    private const OLD_ENUM = "ENUM('vps', 'hosting', 'cloud', 'email', 'ssl', 'domain', 'web_design', 'addon')";
+    private const NEW_ENUM = "ENUM('vps', 'hosting', 'cloud', 'email', 'ssl', 'domain', 'web_design', 'addon', 'hardware', 'it_support', 'server_rental')";
+
+    public function up(): void
+    {
+        DB::statement('ALTER TABLE product_categories MODIFY type ' . self::NEW_ENUM . ' NULL');
+    }
+
+    public function down(): void
+    {
+        DB::statement('ALTER TABLE product_categories MODIFY type ' . self::OLD_ENUM . ' NULL');
+    }
+};

database/migrations/2026_08_25_100001_create_product_type_fields_table.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('product_type_fields', function (Blueprint $table) {
+            $table->id();
+            $table->string('product_type', 50)->index();
+            $table->string('key');
+            $table->string('label');
+            $table->string('field_type', 20)->default('text')
+                ->comment('text | number | textarea | repeater');
+            $table->integer('sort_order')->default(0);
+            $table->boolean('is_required')->default(false);
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('product_type_fields');
+    }
+};

database/migrations/2026_08_25_110000_add_domain_count_to_products_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->integer('domain_count')->nullable()->after('bandwidth')
+                ->comment('Số lượng domain đi kèm gói hosting');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('products', function (Blueprint $table) {
+            $table->dropColumn('domain_count');
+        });
+    }
+};

database/migrations/2026_08_25_120000_add_group_label_to_product_type_fields_table.php

@@ -0,0 +1,23 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('product_type_fields', function (Blueprint $table) {
+            $table->string('group_label')->nullable()->after('product_type')
+                ->comment('Tên nhóm để gom các field liên quan khi hiển thị, vd "Bảo mật"');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('product_type_fields', function (Blueprint $table) {
+            $table->dropColumn('group_label');
+        });
+    }
+};