DE-6596: VU meter component

[fingerartur]

It's a meter that shows the current levels of volume (left and right channels separately).

[thasso]

Nice VU meter :) just had some comments and questions.

[doubeka]

Looks great in storybook! :)
Few comments to look into.

[fingerartur]

@thasso Thanks for pushing this forward! :)

Fun fact

PS: One thing you may have noticed is that instead of taking the average of the amplitudes/volumes I decided to split the frequencies into a couple of bins, average each bin and take the maximum of that. This is because if I take the average over all frequencies even loud audio produces max only cca 50% amplitude/volume in a normal audio track for a movie or something (it doesn't happen that all frequencies would be at max amplitued/volume, not even close).

const average = Math.max(...averages)

So that's my hack on how to make sure the volume bar goes up to the top when I as a human ear hear loud audio 😄.

I think it works pretty well at this point, so I would not like to mess with it more inside this PR, but it's a fun exercise to think about how to work with the volume.

I adressed the issues and we want to merge it now.