logic: add storage transformation to merge anonymous types and the respective typedef

* moved storage related classes to data/storage folder
* implemented recording c++ unions as NODE_UNION instead of just using NODE_TYPE
* added transformation to merge anonymous classes/structs/enums/unions and typedef nodes
* added tests for this transformation
* added setting for enabling/disabling this transformation

src/lib_cxx/data/indexer/IndexerCommandCxx.cpp

@@ -6,13 +6,15 @@ IndexerCommandCxx::IndexerCommandCxx(
 	const std::set<FilePath>& excludedPaths,
 	const std::vector<FilePath>& systemHeaderSearchPaths,
 	const std::vector<FilePath>& frameworkSearchPaths,
-	const std::vector<std::string>& compilerFlags
+	const std::vector<std::string>& compilerFlags,
+	const bool shouldApplyAnonymousTypedefTransformation
 )
 	: IndexerCommand(sourceFilePath, indexedPaths, excludedPaths)
 	, m_systemHeaderSearchPaths(systemHeaderSearchPaths)
 	, m_frameworkSearchPaths(frameworkSearchPaths)
 	, m_compilerFlags(compilerFlags)
 	, m_preprocessorOnly(false)
+	, m_shouldApplyAnonymousTypedefTransformation(shouldApplyAnonymousTypedefTransformation)
 {
 }
 
@@ -66,3 +68,8 @@ void IndexerCommandCxx::setPreprocessorOnly(bool preprocessorOnly)
 {
 	m_preprocessorOnly = preprocessorOnly;
 }
+
+bool IndexerCommandCxx::shouldApplyAnonymousTypedefTransformation() const
+{
+	return m_shouldApplyAnonymousTypedefTransformation;
+}