Produce screencast automatically

[rom1504]

First step is more googling / reading puppeteer/puppeteer#478

Then we can use that in the tests
Might also be interesting as an example (without adding the dependency to puppeteer obviously)

An use case could be to automatically follow the bot from above, for example to capture the movements of a Pathfinding bot

[Karang]

We could also add an optional delay between frames and have a timelapse tool :)

[rom1504]

https://github.com/muralikg/puppetcam seems promising

[Karang]

We can do screencast with the headless renderer now.

[rom1504]

Yes indeed, I'll try it out

[rom1504]

this is done