[#23] Client: Refactoring to optimize memory usage

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

src/FrostFS.SDK.ClientV2/Mappers/Object/Object.cs

@@ -1,5 +1,3 @@
-using FrostFS.SDK.ModelsV2;
-
 namespace FrostFS.SDK.ClientV2.Mappers.GRPC;
 
 internal static class ObjectMapper
@@ -8,7 +6,7 @@ internal static class ObjectMapper
     {
         return new FrostFsObject(obj.Header.ToModel())
         {
-            ObjectId = ObjectId.FromHash(obj.ObjectId.Value.ToByteArray())
+            ObjectId = FrostFsObjectId.FromHash(obj.ObjectId.Value.ToByteArray())
         };
     }    
 }