[#3] Move to netstandard 2.0

Signed-off-by: Pavel Gross <p.gross@yadro.com>

src/FrostFS.SDK.ClientV2/Services/ObjectStreamer.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Threading.Tasks;
+
+using Grpc.Core;
+
+using FrostFS.Object;
+
+namespace FrostFS.SDK.ClientV2;
+
+internal class ObjectStreamer(AsyncClientStreamingCall<PutRequest, PutResponse> call) : IDisposable
+{
+    public AsyncClientStreamingCall<PutRequest, PutResponse> Call { get; private set; } = call;
+
+    public async Task Write(PutRequest request)
+    {
+        if (request is null)
+        {
+            throw new ArgumentNullException(nameof(request));
+        }
+
+        await Call.RequestStream.WriteAsync(request);
+    }
+
+    public async Task<PutResponse> Close()
+    {
+        await Call.RequestStream.CompleteAsync();
+        
+        return await Call.ResponseAsync;
+    }
+
+    public void Dispose()
+    {
+        Call.Dispose();
+    }
+}