C++: Significant iteration of scaffolding output (see commit description)

Generate pre-compiled headers for IL2CPP types and functions
Resolved naming conflicts with functions and macros from windows.h
IL2CPP app functions and TypeInfos were incorrectly placed in global namespace instead of 'app'
Added /MP compiler option (multi-processor compilation)
Split source files into folders
Move GetBaseAddress() into helpers.cpp
Add NewConsole() to helpers.cpp
Move init_il2cpp() from IL2CPP declarations header to own source file
Refactor some header files for consistency and duplicate elimination

Il2CppInspector.CLI/Program.cs

@@ -258,7 +258,7 @@ namespace Il2CppInspector.CLI
 
                 // IDA Python script output
                 using (new Benchmark("Generate IDAPython script")) {
-                    new IDAPythonScript(appModel).WriteScriptToFile(options.PythonOutFile, options.CppOutPath + Path.DirectorySeparatorChar + "il2cpp-types.h");
+                    new IDAPythonScript(appModel).WriteScriptToFile(options.PythonOutFile, Path.Combine(options.CppOutPath, "appdata/il2cpp-types.h"));
                 }
 
                 // C++ output