Сombining rgb_backlight and original_backlight finished.

- RGB Colors settings available only when Settings-Notification-RGB_MOD_Installed swithed ON
- RGB_MOD_Installed switch (ON|OFF) available in Notification only with Debug mode swithed ON.

applications/services/notification/notification_app.c

@@ -523,6 +523,7 @@ static NotificationApp* notification_app_alloc(void) {
     app->settings.led_brightness = 1.0f;
     app->settings.display_off_delay_ms = 30000;
     app->settings.vibro_on = true;
+    app->settings.rgb_mod_installed = false;
 
     app->display.value[LayerInternal] = 0x00;
     app->display.value[LayerNotification] = 0x00;