Initial project setup with domain, UoW, and API structure

Added .gitignore, solution, and project files for .NET 10. Introduced AGENTS.md and PLAN.md for guidelines and planning. Implemented appsettings.json, launchSettings.json, and MySQL config. Created AppDBContext and all domain models with composite keys. Added IUnitOfWork and EFUnitOfWork. Structured feature folders for Region, Route, Vehicle, Store, Warehouse, and Order with DTOs, repositories, services, and controllers. Added initial EF Core migrations and sample HTTP request. Registered dependencies and enabled OpenAPI in development.

Distribution/Features/Order/OrderDTOs.cs

@@ -0,0 +1,18 @@
+namespace Distribution.Features.Order;
+
+public record OrderItemRequest(Guid ItemId, int Quantity);
+
+public record CreateOrderRequest(Guid StoreId, DateTime OrderDate, decimal TotalAmount, List<OrderItemRequest> Items);
+
+public record UpdateOrderRequest(DateTime OrderDate, decimal TotalAmount);
+
+public record OrderItemResponse(Guid ItemId, int Quantity);
+
+public record OrderResponse(
+    Guid Id,
+    DateTime OrderDate,
+    Guid StoreId,
+    decimal TotalAmount,
+    List<OrderItemResponse> Items,
+    bool IsActive,
+    DateTime CreatedAt);