models.h / .cpp was getting too big (around 2.5k lines), and each change
triggered a rebuild in tons of parts of Subsurface, this is the first
commit trying to make the models code sane by removing them all of the
models.h/cpp file and also clearning code in the process.
Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
