docs: add Russian tutorial

[AABur]

re: #267

[Lucas-C]

Nice, thanks ! I'll review this today or tomorrow

Also, if you rebase on the latest commit on master,
you should not be bothered by the build_contributors_html_page.py script hanging anymore

[Lucas-C]

Looks great!
Could you also add links to your tutorial in the README.md, CHANGELOG.md & docs/index.md pages please?
Once your branch is rebased on master I'll merge this very soon

[Lucas-C]

If ever you need help on how to rebase your branch on upstream/master:

• https://gist.github.com/ravibhure/a7e0918ff4937c9ea1c456698dcd58aa
• https://gist.github.com/nnja/a1888523ec851c6b94b2647956d5c3b4
• https://docs.github.com/en/get-started/using-git/using-git-rebase-on-the-command-line

[Lucas-C]

Seems like the rebase did not go well...
There shouldn't be 28 files changed as part of this PR.
Sadly I cannot merge it in its current state.

If your struggling with this, you can always close this PR and open a new one
based on the current state of this GitHub repo.
Things should be simpler this way.

[AABur]

Indeed I messed up with the rebase. Better make a new PR

[Lucas-C]

Would you like this PR be merged during hacktoberfest ?
I will be less available this week-end to review PRs, but I'll try to check things here on Sunday.

[AABur]

Would you like this PR be merged during hacktoberfest ? I will be less available this week-end to review PRs, but I'll try to check things here on Sunday.

It will be great to catch up on hacktoberfest. I will make my changes tonight in the new PR

[AABur]

redo at #283