Moved CoolPropFluid.h into include, removed CoolPropFluid.cpp.  Started adding structure for viscosity and conductivity inputs.

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
Updated paths to CoolPropFluid.h

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
n-Propane viscosity can mostly be read from JSON, all that remains is the higher order terms, some thinking remains on that front

Signed-off-by: Ian bell <ian.h.bell@gmail.com>