feat: Update Kafka publication default values (BrighterCommand#3618)

Co-authored-by: Ian Cooper <ian_hammond_cooper@yahoo.co.uk>

Author: Rafael Lillo

src/Paramore.Brighter.MessagingGateway.Kafka/KafkaPublication.cs

@@ -58,7 +58,7 @@ public class KafkaPublication : Publication
         /// <summary>
         /// Maximum number of messages batched in one MessageSet. 
         /// </summary>
-        public int BatchNumberMessages { get; set; } = 10;
+        public int BatchNumberMessages { get; set; } = 10000;
 
         /// <summary>
         /// Messages are produced once only
@@ -104,7 +104,7 @@ public class KafkaPublication : Publication
         /// <summary>
         /// Maximum number of messages allowed on the producer queue.
         /// </summary>
-        public int QueueBufferingMaxMessages { get; set; } = 10;
+        public int QueueBufferingMaxMessages { get; set; } = 100000;
 
         /// <summary>
         /// Maximum total message size sum allowed on the producer queue.