[#26] All: Remove V2 from naming

Rename project, namespaces and class names

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

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

@@ -0,0 +1,12 @@
+namespace FrostFS.SDK.Client.Mappers.GRPC;
+
+internal static class ObjectMapper
+{
+    internal static FrostFsObject ToModel(this Object.Object obj)
+    {
+        return new FrostFsObject(obj.Header.ToModel())
+        {
+            ObjectId = FrostFsObjectId.FromHash(obj.ObjectId.Value.ToByteArray())
+        };
+    }
+}