Move NodeToString.cpp to benchmark and remove interal usages (#1568)

Summary:
X-link: https://github.com/facebook/react-native/pull/42710

Pull Request resolved: https://github.com/facebook/yoga/pull/1568

This is no longer going to be built with normal yoga so we are going to switch to a public API

Reviewed By: NickGerleman

Differential Revision: D53141235

fbshipit-source-id: 259270a4cd91ef0dab91cefba9c41953b6340d78

capture/NodeToString.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#pragma once
+
+#include <string>
+
+#include <yoga/Yoga.h>
+
+namespace facebook::yoga {
+
+void nodeToString(
+    std::string& str,
+    YGNodeRef node,
+    YGPrintOptions options,
+    uint32_t level);
+
+} // namespace facebook::yoga