Libstereo custom SGM algorithms

CMakeLists.txt

components/operators/CMakeLists.txt

components/operators/include/ftl/operators/disparity.hpp

components/operators/src/depth.cpp

components/operators/src/disparity/libstereo.cpp

lib/libstereo/CMakeLists.txt

lib/libstereo/include/stereo.hpp

lib/libstereo/include/stereo_types.hpp

lib/libstereo/middlebury/CMakeLists.txt

lib/libstereo/middlebury/main.cpp

lib/libstereo/middlebury/middlebury.cpp

lib/libstereo/middlebury/middlebury.hpp

lib/libstereo/src/aggregations/standard_sgm.hpp

lib/libstereo/src/array2d.hpp

lib/libstereo/src/consistency.hpp

lib/libstereo/src/cost_aggregation.hpp

lib/libstereo/src/costs/absolute_diff.hpp

lib/libstereo/src/costs/census.cu

lib/libstereo/src/costs/census.hpp

lib/libstereo/src/costs/dual.hpp