Models: Add Credit

Elwig/Helpers/AppDbContext.cs

@@ -44,6 +44,7 @@ namespace Elwig.Helpers {
         public DbSet<DeliveryPartModifier> DeliveryPartModifiers { get; private set; }
         public DbSet<PaymentVar> PaymentVariants { get; private set; }
         public DbSet<PaymentMember> MemberPayments { get; private set; }
+        public DbSet<Credit> Credits { get; private set; }
 
         private readonly StreamWriter? LogFile = null;
         public static DateTime LastWriteTime => File.GetLastWriteTime(App.Config.DatabaseFile);