* 🆕 Added support for brand discounts in `CalculateOrderDiscountCommandHandler`
* 🏷️ Updated `DiscountCommands` class to include `BrandId` property
* 🏗️ Introduced `BrandDiscount` class in `Discount.Aggregate.cs` with `Create` method
* 🛠️ Modified `Order` class in `Order.Aggregate.cs` to handle `BrandId`
* 🏷️ Updated `OrderProduct` class in `Order.Aggregate.cs` to include `BrandId` property
* 🆕 Added `Brand` discount type to `DiscountType` enum
* ✨ Enhanced `CreateDiscountCommandHandler` and `UpdateDiscountCommandHandler` for brand discounts
* 🆕 Introduced `BrandDiscount` class in `BrandDiscount.cs` to represent brand-specific discounts
Changes made by Amir.h Khademi
Amir Hossein Khademi