False positive "should not #include C++ source file" for CMake's AUTOMOC files

[ecangi]

We recently migrated our solution and projects from Qmake to CMake's infamous automoc feature.

Since Qmake is considered deprecated in qt6 and will quite possibly disappear in qt7, the move to CMake is a logical one for many software stacks and companies.

The result is that generated CMake project will carry a .cpp file named moc_compilation_<debug|release|...>.cpp which in turn includes a number of generated .cpp ./FolderABC/moc_XYZ.cpp files. All of these includes are currently flagged as 'should not #include C++ source file'.