feat(batch34): implement and verify group A cluster consumer features

dotnet/src/ZB.MOM.NatsNet.Server/NatsServer.JetStreamClusterConsumers.cs

@@ -0,0 +1,20 @@
+namespace ZB.MOM.NatsNet.Server;
+
+public sealed partial class NatsServer
+{
+    internal void SendConsumerLostQuorumAdvisory(NatsConsumer? consumer)
+    {
+        if (consumer == null || !consumer.ShouldSendLostQuorum())
+            return;
+
+        Noticef("JetStream consumer lost quorum advisory for consumer {0} on stream {1}", consumer.Name, consumer.Stream);
+    }
+
+    internal void SendConsumerLeaderElectAdvisory(NatsConsumer? consumer)
+    {
+        if (consumer == null)
+            return;
+
+        Noticef("JetStream consumer leader elected advisory for consumer {0} on stream {1}", consumer.Name, consumer.Stream);
+    }
+}