move fabric to ReactCommon/react/renderer

Summary:
This diff moves fabric C++ code from ReactCommon/fabric to ReactCommon/react/renderer
As part of this diff I also refactored components, codegen and callsites on CatalystApp, FB4A and venice

Script: P137350694

changelog: [internal] internal refactor

Reviewed By: fkgozali

Differential Revision: D22852139

fbshipit-source-id: f85310ba858b6afd81abfd9cbe6d70b28eca7415

ReactCommon/react/renderer/debug/DebugStringConvertibleItem.cpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#include "DebugStringConvertibleItem.h"
+
+namespace facebook {
+namespace react {
+
+#if RN_DEBUG_STRING_CONVERTIBLE
+
+DebugStringConvertibleItem::DebugStringConvertibleItem(
+    const std::string &name,
+    const std::string &value,
+    const SharedDebugStringConvertibleList &props,
+    const SharedDebugStringConvertibleList &children)
+    : name_(name), value_(value), debugProps_(props), children_(children) {}
+
+std::string DebugStringConvertibleItem::getDebugName() const {
+  return name_;
+}
+
+std::string DebugStringConvertibleItem::getDebugValue() const {
+  return value_;
+}
+
+SharedDebugStringConvertibleList DebugStringConvertibleItem::getDebugProps()
+    const {
+  return debugProps_;
+}
+
+SharedDebugStringConvertibleList DebugStringConvertibleItem::getDebugChildren()
+    const {
+  return children_;
+}
+
+#endif
+
+} // namespace react
+} // namespace facebook