Make Wavesurfer audio widget avaliable globally

[aleksati]

Talking about the audio widget/audio visualization that appears in these posts, that Ulrik originally made:

• https://mct-master.github.io/masters-thesis/2021/05/15/ulrikah-rave.html
• https://mct-master.github.io/portal/2022/04/11/aleksati-5g-nmp.html

Should be implemented so that you can just do this in a blog post to make it work:

<div class="waveform" path="path-to-audio-file" color="optional-color-specification"/>

[stefanofasciani]

An option would be: a) the

[aleksati]

This feature should work now with any post.