Hi, and thank you for your interest!
CopyQ is being translated using Weblate, a web tool designed to ease translating for both developers and translators.
Translation project for CopyQ into Lithuanian currently contains 702 strings for translation and is 12.4% complete.
If you would like to contribute to translation of CopyQ, you need to register on this server.
Once you have activated your account just proceed to the translation section.