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.
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