Add sound when new Transaction appears on screen

[peasandwell]

A short simple sound should play when a <Transaction /> appears on the screen to alert the user if they are not looking at the screen.

Approved sound TBC but I think @dan1elhughes already has something in mind.

[peasandwell]

@dan1elhughes are you able to provide more information on how you want this to function?

[dan1elhughes]

This actually looks fairly complex, looking at this sample code. Not something I've implemented before. I think the sounds should be triggered in the TransactionList component using the last section of code in this stackoverflow answer.