YT-19210: expose YQL shared library for YT.

After this, a new target libyqlplugin.so appears. in open-source cmake build.
Diff in open-source YDB repo looks like the following: https://paste.yandex-team.ru/f302bdb4-7ef2-4362-91c7-6ca45f329264

1 files changed, 27 insertions, 0 deletions

diff --git a/yt/cpp/mapreduce/http/core.h b/yt/cpp/mapreduce/http/core.h
new file mode 100644
index 0000000000..37c74d7551
--- /dev/null
+++ b/yt/cpp/mapreduce/http/core.h
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <yt/yt/core/http/public.h>
+
+#include <memory>
+
+namespace NYT::NHttp {
+
+////////////////////////////////////////////////////////////////////////////////
+
+/// @brief Wrapper for THeaderPtr which allows to hide NYT::IntrusivePtr from interfaces.
+struct THeadersPtrWrapper
+{
+    THeadersPtrWrapper(THeadersPtr ptr)
+        : Ptr(std::make_shared<THeadersPtr>(std::move(ptr)))
+    { }
+
+    THeadersPtr Get() {
+        return *Ptr;
+    }
+
+    std::shared_ptr<THeadersPtr> Ptr;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT::NHttp