new structure called word buffer to store words

maca_common/include/mcd.h

maca_common/include/word.h

maca_common/src/mcd.c

maca_common/src/sentence.c

maca_common/src/word.c

maca_lemmatizer/src/context.c

maca_trans_parser/CMakeLists.txt

maca_trans_parser/src/context.c

maca_trans_parser/src/test_word_buffer.c

maca_trans_parser/src/word_buffer.c

maca_trans_parser/src/word_buffer.h