Added shared projects

LiteCharms.Features/Customers/Queries/GetCustomerRefundsQuery.cs

@@ -0,0 +1,18 @@
+using LiteCharms.Models;
+
+namespace LiteCharms.Features.Customers.Queries;
+
+public class GetCustomerRefundsQuery : IRequest<Result<OrderRefund[]>>
+{
+    public Guid CustomerId { get; set; }
+
+    private GetCustomerRefundsQuery(Guid customerId) => CustomerId = customerId;
+
+    public static GetCustomerRefundsQuery Create(Guid customerId)
+    {
+        if (customerId == Guid.Empty)
+            throw new ArgumentException("CustomerId is required.", nameof(customerId));
+
+        return new(customerId);
+    }
+}