Added licence Expat (MIT) to source files

decoder/include/Decoder.hpp

decoder/src/Decoder.cpp

decoder/src/macaon_decode.cpp

error_correction/include/Error.hpp

error_correction/src/Error.cpp

maca_common/include/Dict.hpp

maca_common/include/File.hpp

maca_common/include/LimitedArray.hpp

maca_common/include/LimitedStack.hpp

maca_common/include/ProgramOutput.hpp

maca_common/include/ProgramParameters.hpp

maca_common/include/programOptionsTemplates.hpp

maca_common/include/util.hpp

maca_common/src/Dict.cpp

maca_common/src/File.cpp

maca_common/src/ProgramOutput.cpp

maca_common/src/ProgramParameters.cpp

maca_common/src/macaon_compute_l_rules.cpp

maca_common/src/macaon_convert_embeddings.cpp

maca_common/src/programOptionsTemplates.cpp