Added option to reload pretrained embeddings during decoding

decoder/src/MacaonDecode.cpp

reading_machine/src/Classifier.cpp

torch_modules/include/Submodule.hpp

torch_modules/src/ContextModule.cpp

torch_modules/src/ContextualModule.cpp

torch_modules/src/DepthLayerTreeEmbeddingModule.cpp

torch_modules/src/DistanceModule.cpp

torch_modules/src/FocusedColumnModule.cpp

torch_modules/src/HistoryModule.cpp

torch_modules/src/RawInputModule.cpp

torch_modules/src/SplitTransModule.cpp

torch_modules/src/StateNameModule.cpp

torch_modules/src/Submodule.cpp