Problem description

I noticed that Able Player does not include Slovak language support. The player interface and messages are not available in Slovak.

Proposed solution

It would be great to add support for the Slovak language (sk) and translate all interface strings so that the player can be used in Slovak environments.

Additional context

Slovak translation would be especially helpful for public institutions and organizations that must comply with European accessibility legislation including the Web Accessibility Directive (WAD) and the European Accessibility Act (EAA) as well as with WCAG 2.1 and EN 301 549 standards.