Audible chime / sound when it's your turn

**What's your idea / feature request?**
Play a sound when it's your turn

**Is your feature request related to a problem or pain point?**
We could make it more clear when it's your turn

**Describe the solution you'd like**
We could play a sound, make the tab flash, etc

**Additional context**
mentioned here: https://boardgamegeek.com/thread/2581255/article/36757772#36757772
