* Hindi language section added

* Hindi Free Courses Added

* Update free-programming-books-hn.md

* removed empty files
Co-Authored-By: NDwarkesh Kaswala <71209082+dwarcash@users.noreply.github.com>

* renamed hn to hi for hindi as per ISO
Co-Authored-By: NDwarkesh Kaswala <71209082+dwarcash@users.noreply.github.com>

* Hindi / हिंद language added
Co-Authored-By: NDwarkesh Kaswala <71209082+dwarcash@users.noreply.github.com>

* playlists removed and added one single video links
Co-Authored-By: NDwarkesh Kaswala <71209082+dwarcash@users.noreply.github.com>

* "playlist" links added and "full course in one video" links added
Co-Authored-By: NDwarkesh Kaswala <71209082+dwarcash@users.noreply.github.com>
Co-authored-by: NDwarkesh Kaswala <dwarkeshkaswala777@gmail.com>