Enhancement: Ukrainian localization added

[tpostolyuk]

Currently, the editor does not support the Ukrainian language, making it inaccessible to Ukrainian-speaking users. This lack of localization can be frustrating for users who prefer or require the interface in their native language.

I have added Ukrainian localization to the editor by providing translations for all relevant UI elements. This allows users to switch the interface to Ukrainian, improving accessibility and usability for a broader audience.

PR Link: https://github.com/jpuri/react-draft-wysiwyg/pull/1458

Let me know if you want any refinements! 🚀