nats-io#636 - JetStream Batch Get Client support

* Code style

Author: Ivandemidov00

src/NATS.Client.JetStream/NatsJSStream.cs

@@ -196,6 +196,12 @@ public IAsyncEnumerable<NatsMsg<T>> GetBatchDirectAsync<T>(string nextBySubject,
         return GetBatchDirectInternalAsync<T>(request, serializer, cancellationToken);
     }
 
+    public ValueTask<StreamMsgGetResponse> GetAsync(StreamMsgGetRequest request, CancellationToken cancellationToken = default) =>
+        _context.JSRequestResponseAsync<StreamMsgGetRequest, StreamMsgGetResponse>(
+            subject: $"{_context.Opts.Prefix}.STREAM.MSG.GET.{_name}",
+            request: request,
+            cancellationToken);
+
     private IAsyncEnumerable<NatsMsg<T>> GetBatchDirectInternalAsync<T>(StreamMsgBatchGetRequest request, INatsDeserialize<T>? serializer = default, CancellationToken cancellationToken = default)
     {
         ValidateStream();
@@ -209,12 +215,6 @@ private IAsyncEnumerable<NatsMsg<T>> GetBatchDirectInternalAsync<T>(StreamMsgBat
             cancellationToken: cancellationToken);
     }
 
-    public ValueTask<StreamMsgGetResponse> GetAsync(StreamMsgGetRequest request, CancellationToken cancellationToken = default) =>
-        _context.JSRequestResponseAsync<StreamMsgGetRequest, StreamMsgGetResponse>(
-            subject: $"{_context.Opts.Prefix}.STREAM.MSG.GET.{_name}",
-            request: request,
-            cancellationToken);
-
     private void ThrowIfDeleted()
     {
         if (_deleted)