Add subscription pricing and Base drawing limit

MauiProgram.cs

@@ -29,6 +29,7 @@ public static class MauiProgram
         builder.Services.AddSingleton(IncomingFileService.Shared);
         builder.Services.AddSingleton<AppLocalizationService>();
         builder.Services.AddSingleton<ManualLicenseService>();
+        builder.Services.AddSingleton<PlayPurchaseVerificationService>();
 #if ANDROID
         builder.Services.AddSingleton<IPlayBillingService, Platforms.Android.AndroidPlayBillingService>();
 #else