Add JSON configuration and argument parsing system

cv-node/config/config.json

cv-node/include/ftl/algorithms/opencv_sgbm.hpp

cv-node/include/ftl/algorithms/rtcensus.hpp

cv-node/include/ftl/disparity.hpp

cv-node/include/ftl/local.hpp

cv-node/include/nlohmann/json.hpp

cv-node/src/algorithms/opencv_sgbm.cpp

cv-node/src/algorithms/rtcensus.cpp

cv-node/src/disparity.cpp

cv-node/src/local.cpp

cv-node/src/main.cpp