Add Russian language support

[sergey-akhmineev]

Thank you for contributing to Harbor!

Comprehensive Summary of your change

Added support for the Russian language, including translations for UI elements and configuration files.

Issue being fixed

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• Well Written Title and Summary of the PR
• Label the PR as needed. "release-note/new-feature"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[OrlinVasilev]

Hi @sergey-akhmineev great stuff but we would need another Russian speaker to verify the translation if you don't mind
and also we would love to have a long term support on the translation :)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.08%. Comparing base (c8c11b4) to head (eb849e7).
Report is 312 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main   #21083       +/-   ##
===========================================
+ Coverage   45.36%   66.08%   +20.71%     
===========================================
  Files         244     1049      +805     
  Lines       13333   114649   +101316     
  Branches     2719     2867      +148     
===========================================
+ Hits         6049    75768    +69719     
- Misses       6983    34737    +27754     
- Partials      301     4144     +3843     

Flag	Coverage Δ
unittests	66.08% <ø> (+20.71%)	⬆️

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see 1288 files with indirect coverage changes

[sergey-akhmineev]

Hi @OrlinVasilev of course I don't mind, I understand everything. If you really want to, of course I will continue long term translation support.