feat: Add package management features and update checkout summary

- Added PackageService to handle package-related operations.
- Introduced MyPackages and Packages pages for user package management.
- Updated CheckoutSummary to display VAT calculations.
- Enhanced OrderDetail to show financial details including VAT.
- Added ChangePassword page for user profile management.
- Implemented OrderTracking page for tracking order status.
- Updated RouteConstants to include new routes for packages and password change.

src/FrontOffice.Main/Pages/Store/CheckoutSummary.razor.cs

@@ -91,6 +91,11 @@ public partial class CheckoutSummary : ComponentBase
 
     private static string FormatPrice(long price) => string.Format("{0:N0} تومان", price);
 
+    /// <summary>
+    /// محاسبه مالیات بر ارزش افزوده (۹%)
+    /// </summary>
+    private long CalculateVAT() => (long)(Cart.Total * 0.09);
+
     private static string GetProductImageUrl(string? imageUrl)
         => string.IsNullOrWhiteSpace(imageUrl) ? "/images/product-placeholder.svg" : imageUrl;
 }