async dispatches sending of event overview to discord channel

Tools/BiblioTech/Rewards/RoleDriver.cs

@@ -45,11 +45,18 @@ namespace BiblioTech.Rewards
         private async Task ProcessChainEvents(string[] eventsOverview)
         {
             if (eventsChannel == null || eventsOverview == null || !eventsOverview.Any()) return;
+            await Task.Run(async () =>
+            {
                 foreach (var e in eventsOverview)
+                {
+                    if (!string.IsNullOrEmpty(e))
                     {
                         await eventsChannel.SendMessageAsync(e);
+                        await Task.Delay(3000);
                     }
                 }
+            });
+        }
 
         private async Task<Dictionary<ulong, IGuildUser>> LoadAllUsers(SocketGuild guild)
         {