Translation of the interface into Russian.

[AbadzhevaK8]

Translation of the interface into Russian. I did not touch some of the phrases already translated. I hope my contribution will be useful.

[cxw42]

@Makemeloco Thank you very much! This looks very useful. I have asked @rwexmd to take a look at it as a sanity check, but I don't anticipate any issues.

• Would you please add a commit adding yourself to LICENSE.md and app/settings/manifest.js? An example is at https://github.com/cxw42/TabFern/commit/9e5a64fe88929ec81c50ccccc67adce138774546 . That way you will be properly credited once I merge this PR.

• Do you speak any other langages? I would be delighted to expand the range further.

Thanks!

Related to #135

[cxw42]

@Makemeloco I heard back from @rwexmd - he does not have any suggestions for changes. Thank you again!