fix: add cs translations

[blahetal]

Hello, I just added a few translations to cs lang file.

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (d6214b5) 55.87% compared to head (9c21d25) 55.87%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1068 +/- ## ======================================= Coverage 55.87% 55.87% ======================================= Files 259 259 Lines 12314 12314 Branches 3089 3089 ======================================= Hits 6880 6880 Misses 5027 5027 Partials 407 407 ```

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