qt: Add a configuration tab for Graphics and move relevant fields.

src/citra_qt/configure_dialog.cpp

@@ -31,6 +31,7 @@ void ConfigureDialog::applyConfiguration() {
     ui->generalTab->applyConfiguration();
     ui->systemTab->applyConfiguration();
     ui->inputTab->applyConfiguration();
+    ui->graphicsTab->applyConfiguration();
     ui->audioTab->applyConfiguration();
     ui->debugTab->applyConfiguration();
 }