add korean

[nikste]

hi, great project!
thanks for putting in the effort!
not sure if this is the right place, but it would be great if there were a Korean course!

[giorginogreg]

Ehy there @nikste! I think that this repo is no longer maintained by kantord, if you would like, i created a fork here, so if you would like to contribute and create a course based on what you learned, you are fully welcome! Let me know if i could help somehow ;)