Bundle translation files for Qt builtin UI elements #3498
Description
Is your feature request related to a problem? Please describe.
QT provides translation files for various builtin UI elements like Ok/Cancel buttons, file open/save dialogs and similar. Cutter has the logic for loading them, but they are not included in release packages.
Describe the solution you'd like
Windows, macOs .app and Linux Appimage builds should include qt_lang.qm and qtbase_lang.qm files for languages that have Cutter translation.
Describe alternatives you've considered
Additional context
Be careful with Linux system builds, ideally those should not duplicate system qm files. Might need some adjustments to translation loading logic to locate them. Check if there is suitable QT api to locate them.