4digitdisplay.cxx: add Interesting tag and remove pointless array

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
Doxyfile.in: make doc generation work

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
ipk: add cpack ipk generation

* added similar cmake modules used in libmaa

Signed-off-by: Thomas Ingleby <thomas.c.ingleby@intel.com>