Make path animatable

[AndreaBarghigiani]

We want to animate the path after the page is load.

Base idea

Set all the values of the array (including the arcRad) and transition them from 0 to the original value. The only issue I can think of for now is that arcRad needs to grow exponentially based on the space left, that's because if we have a radius bigger than the space browser does the best it can think of to still drawing the arc.

[AndreaBarghigiani]

Tested an approach with anime.js and its morph functions and while it gets animated it surely isn't the result we're aiming for. You can check it out in feat/testing-animation branch to have a look.

As per commit comment, I believe the issue relies on the use of H, h and v because their are lines and morphing works best with simple points.

One solution could be to convert all the lines to use the L command but I believe we can reach something similar with just CSS transform.