* Add Pythontutor & Yandex C++ courses to Russian coursers

* add authors
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Update courses/free-courses-ru.md
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* Update courses/free-courses-ru.md
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>

* fix: alphabetize added `c-plus-plus` courses

Solves lint faults about rule `alphabetize-lists`

39:1-44:232  warning  Alphabetical ordering: swap l.43 and l.42    alphabetize-lists  remark-lint

* fix: alphabetize PythonTutor. Cyrilics before latins

* fix: alphabetize PythonTutor. between Cyrilics

Solve lint fault:

150:1-158:78  warning  Alphabetical ordering: swap l.155 and l.154  alphabetize-lists  remark-lint
Co-authored-by: NMila Grigoryeva <mila.grigoryeva@nextfour.com>
Co-authored-by: NEric Hellman <eric@hellman.net>
Co-authored-by: NDavid Ordás <3125580+davorpa@users.noreply.github.com>