Ukrainian: we need a native speaker

[MTSistemi]

SkillFishOS ships in four languages — Italian, English, Polish and Ukrainian — across the
applications, the login screen, the installer slideshow and the website.

The Polish was reviewed by a native speaker, Cyryl Sochacki,
and the difference is visible. The Ukrainian is our own work. It is complete, and it has
never been read by someone who speaks the language.

If that is you, even an hour would help. Concretely:

• the UI strings live in system/usr/share/skillfish/i18n.py and in the per-app tables
  under apps/;
• the website strings are in website/src/i18n.uk.ts;
• corrections can be a pull request, a comment here, or a plain list of "this line is wrong,
  it should read…". Whatever is least effort for you.

Technical terms that have no settled Ukrainian form are the ones we are least sure about —
things like undervolt, governor, compute unit, snapshot. If the honest answer is
"leave it in English", that is a useful answer too.

You would be credited by name, the same as Cyryl.