Adds the possibility of setting a keybind to toggle volume of game and music. It's quite useful for when you're briefing in heavy rain, or if you're in an obnoxiously loud car.
## 2. Features
- Automatically lower volume when inside vehicles (restores when exiting vehicles)
- Change reduction percentage and fade delay
- Option to show/hide notification
- Option to remind you every minute if your volume is lowered
