[doxy] add some more folders to include path (#9955)
[doxy] add some more folders to include path (#9955)

* [doxy] add some more folders to include path

To prevent many doxygen warnings regarding 'Streamer' function.

* use a different virtual folder

to prevent name conflicts with other help books
olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root