Process reactions from queue

PayForReactions/Program.cs

@@ -19,6 +19,9 @@ builder.Services.AddSingleton<NostrStore>(svc =>
     return new NostrStore("./data", logger);
 });
 
+builder.Services.AddSingleton<ReactionQueue>();
+builder.Services.AddHostedService<ReactionQueueWorker>();
+
 var host = builder.Build();
 
 host.UseWebSockets();