Add PC System Notifications & Sound Alerts so Players Don't Miss In-Game Events

It would be great to have PC system notifications and sound alerts. A lot of web games already have this, since most players only pop into the web game for a quick action and then switch to YouTube or play another game in fullscreen — so they end up missing a lot of in-game notifications. System notifications would help PC players get back to TheFifthFamily in time when something happens.