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/data/parser/ParserClientImpl.cpp

@@ -129,7 +129,7 @@ Node::NodeType ParserClientImpl::symbolKindToNodeType(SymbolKind symbolKind) con
 	case SYMBOL_TYPE_PARAMETER:
 		return Node::NODE_TYPE_PARAMETER;
 	case SYMBOL_UNION:
-		return Node::NODE_TYPE;
+		return Node::NODE_UNION;
 	default:
 		break;
 	}