Add Ukraine holidays localization: th

[PPsyrius]

Proposed change

Add Thai (th) localization support for Ukraine holidays, based on Посольство України в Таїланді/Embassy of Ukraine in the Kingdom of Thailand's Official Translation i.e. [1] [2] .

Type of change

• New country/market holidays support (thank you!)
• Supported country/market holidays update (calendar discrepancy fix, localization)
• Existing code/documentation/test/process quality improvement (best practice, cleanup, refactoring, optimization)
• Dependency update (version deprecation/pin/upgrade)
• Bugfix (non-breaking change which fixes an issue)
• Breaking change (a code change causing existing functionality to break)
• New feature (new holidays functionality in general)

Checklist

• I've followed the contributing guidelines
• I've successfully run make check, all checks and tests are green

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (2aa829a) to head (b19e8e0).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff            @@
##               dev     #2189   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          194       194           
  Lines        11657     11657           
  Branches      1691      1691           
=========================================
  Hits         11657     11657           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[KJhellico]

@PPsyrius, it's just awesome! Thank you for this translation!

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[arkid15r]

🇺🇦 LGTM

Thank you!