[Ads] added copyright headers

MaterialsLib/Adsorption/Adsorption.h

MaterialsLib/Adsorption/Density100MPa.cpp

MaterialsLib/Adsorption/Density100MPa.h

MaterialsLib/Adsorption/DensityConst.cpp

MaterialsLib/Adsorption/DensityConst.h

MaterialsLib/Adsorption/DensityCook.cpp

MaterialsLib/Adsorption/DensityCook.h

MaterialsLib/Adsorption/DensityDubinin.cpp

MaterialsLib/Adsorption/DensityDubinin.h

MaterialsLib/Adsorption/DensityHauer.cpp

MaterialsLib/Adsorption/DensityHauer.h

MaterialsLib/Adsorption/DensityLegacy.cpp

MaterialsLib/Adsorption/DensityLegacy.h

MaterialsLib/Adsorption/DensityMette.cpp

MaterialsLib/Adsorption/DensityMette.h

MaterialsLib/Adsorption/DensityNunez.cpp

MaterialsLib/Adsorption/DensityNunez.h