[vulkan] Initial implementation of post-processing shaders

src/qt_common/config/shared_translation.cpp

@@ -150,6 +150,7 @@ std::unique_ptr<TranslationMap> InitializeTranslations(QObject* parent) {
     INSERT(Settings, anti_aliasing, tr("Anti-Aliasing Method:"),
            tr("The anti-aliasing method to use.\nSMAA offers the best quality.\nFXAA "
               "can produce a more stable picture in lower resolutions."));
+    INSERT(Settings, post_shader_chain, QString(), QString());
     INSERT(Settings, fullscreen_mode, tr("Fullscreen Mode:"),
            tr("The method used to render the window in fullscreen.\nBorderless offers the best "
               "compatibility with the on-screen keyboard that some games request for "