Implement Audio feedback (ROM)

[neophob]

Currently WPC-Emu use a audio sprite file to play the correct sounds. Goal is to support ROM audio for games which includes this metadata (see https://github.com/neophob/wpc-emu/blob/master/GAMES.md) - at the moment 7 games support audio

[freezy]

It's possible to play sounds from a web worker, right?

[neophob]

Definitive worth a try is Audio Worklet: https://webaudio.github.io/web-audio-api/#AudioWorklet.

Not sure about the other audio functions, for example the onaudioprocess handler lives in the DOM.

[neophob]

Step 1 will be implemented when #173 is merged