Add an Arabic version of the README file (trekhleb#622)

* add the DS link

* Finish translating math

* add Arabic version of the README FILE

* add Arabic version of the README FILE

* add the arabic readme file link to main readme file

* add the arabic readme file link to main readme file

* add the arabic readme file link to main readme file

Co-authored-by: Oleksii Trekhleb <trehleb@gmail.com>

Author: B3ns44d