Add ability to fully delete items from the DB

Wallet/DeleteItemHandler.cs

@@ -0,0 +1,26 @@
+using Microsoft.EntityFrameworkCore;
+using Toolkit.Foundation;
+using Wallet.Data;
+
+namespace Wallet;
+
+public class DeleteItemHandler(IDbContextFactory<WalletContext> dbContextFactory) :
+    IHandler<DeleteEventArgs<Item<Guid>>, bool>
+{
+    public async Task<bool> Handle(DeleteEventArgs<Item<Guid>> args,
+        CancellationToken cancellationToken)
+    {
+        if (args.Sender is Item<Guid> item)
+        {
+            Guid id = item.Value;
+
+            using WalletContext context = await dbContextFactory.CreateDbContextAsync(cancellationToken);
+            if (await context.FindAsync<ItemEntry>(id) is ItemEntry result)
+            {
+                context.Items.Remove(result);
+                await context.SaveChangesAsync(cancellationToken);
+            }
+        }
+        return false;
+    }
+}