Harris corner detection with cuda kernels

Build and run

mkdir build
cd build
cmake ..
make render -j <nb_cores>
./render [-i <input_image>] [-o <output_image>] [-m <mode 'GPU/CPU'>]

Benchmark

make bench -j <nb_cores>  # building could fail because of google benchmark library 
                          # you may need to add a missing import in the built files
./bench