CodeCompass test projects

• simple: very basic test project
• inclusions: header inclusion test project
• enums: enum and enum class test project
• cyclic: cyclic inclusion test project
• funcptr: function pointer test project
• namespaces: namespace test project
• foreach: range-based for loop test project
• macros: macro expansion test project
• special: special keywords and metadata test project
• inheritance: inheritance and type hierarchy test project
• lifetime: variable lifetime test project
• lambda: lambda expression parsing test project
• cohesion: lack of cohesion metrics test project
• decl_def: entity declaration and definition test project