src: added optional indexer AST logging
* removed old AstVisitor * added new implementation called CxxAstVisitor * added CxxVerboseAstVisitor that may wrap the CxxAstVisitor to log the AST while visiting * added the same structure for the Java visitors * removed all the logs that were fired when recording stuff * Added UI setting for verbose indexer logging. * implemented AST name obfuscation for Java and Cxx * unified test visitors for Java and Cxx * implemented recording using directive decl * removed most of the old onXxxParsed methods
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