Rewrite binary operators for DiscreteFunctionVariant

src/language/modules/BinaryOperatorRegisterForVh.cpp

src/language/modules/MathFunctionRegisterForVh.cpp

src/language/modules/SchemeModule.cpp

src/language/modules/SchemeModule.hpp

src/language/modules/UnaryOperatorRegisterForVh.cpp

src/language/utils/CMakeLists.txt

...language/utils/EmbeddedIDiscreteFunctionMathFunctions.cpp

...language/utils/EmbeddedIDiscreteFunctionMathFunctions.hpp

src/language/utils/EmbeddedIDiscreteFunctionOperators.cpp

src/language/utils/EmbeddedIDiscreteFunctionOperators.hpp

src/language/utils/EmbeddedIDiscreteFunctionUtils.cpp

src/language/utils/EmbeddedIDiscreteFunctionUtils.hpp

src/scheme/DiscreteFunctionIntegrator.cpp

src/scheme/DiscreteFunctionIntegrator.hpp

src/scheme/DiscreteFunctionInterpoler.cpp

src/scheme/DiscreteFunctionInterpoler.hpp

src/scheme/DiscreteFunctionP0.hpp

src/scheme/DiscreteFunctionP0Vector.hpp

src/scheme/DiscreteFunctionUtils.cpp

src/scheme/DiscreteFunctionUtils.hpp