This adds a Game List configuration group box which is similar to yuzu's, with features including icon size setting, row 1/2 text, and ability to hide invalid titles (those without a valid SMDH). I also added a UI tab and moved the language and theme settings there.
The hotkey widget has a separate class defined for it, and qt cannot automatically retranslate it when retranslateUi is called. This commit explicitly calls the function to retranslate the hotkey dialog.
