generate mass operator

operators/CMakeLists.txt

operators/mass/CMakeLists.txt

operators/mass/P1ElementwiseMass.cpp

operators/mass/P1ElementwiseMass.hpp

operators/mass/avx/P1ElementwiseMass_apply_macro_2D.cpp

operators/mass/avx/P1ElementwiseMass_apply_macro_3D.cpp

...iseMass_computeInverseDiagonalOperatorValues_macro_2D.cpp

...iseMass_computeInverseDiagonalOperatorValues_macro_3D.cpp

operators/mass/noarch/P1ElementwiseMass_apply_macro_2D.cpp

operators/mass/noarch/P1ElementwiseMass_apply_macro_3D.cpp

...iseMass_computeInverseDiagonalOperatorValues_macro_2D.cpp

...iseMass_computeInverseDiagonalOperatorValues_macro_3D.cpp

...ators/mass/noarch/P1ElementwiseMass_toMatrix_macro_2D.cpp

...ators/mass/noarch/P1ElementwiseMass_toMatrix_macro_3D.cpp