[#1] Define SDK structure

TODO: Вынести маппинг модель -> grpc в отдельный слой

Signed-off-by: Ivan Pchelintsev <i.pchelintsev@yadro.com>

sdk/src/FrostFS.SDK.ClientV2/Services/Netmap.cs

@@ -0,0 +1,28 @@
+using FrostFS.Netmap;
+
+namespace FrostFS.SDK.ClientV2;
+
+public partial class Client
+{
+    public async Task<LocalNodeInfoResponse> GetLocalNodeInfoAsync()
+    {
+        var request = new LocalNodeInfoRequest
+        {
+            Body = new LocalNodeInfoRequest.Types.Body { },
+        };
+        request.AddMetaHeader();
+        request.Sign(_key);
+        return await _netmapServiceClient.LocalNodeInfoAsync(request);
+    }
+
+    public async Task<NetworkInfoResponse> GetNetworkInfoAsync()
+    {
+        var request = new NetworkInfoRequest
+        {
+            Body = new NetworkInfoRequest.Types.Body { },
+        };
+        request.AddMetaHeader();
+        request.Sign(_key);
+        return await _netmapServiceClient.NetworkInfoAsync(request);
+    }
+}