Add support for AmCharts version 5

[tobiu]

Currently, our main thread addon is limited to v4, which is quite outdated at this point.

v5 has several breaking changes, so it would be close to a rewrite.

Sadly, we can not use the library inside a worker yet. While we can move the ownership of a canvas node directly to our canvas worker, their root logic seems to require a div: https://www.amcharts.com/docs/v5/getting-started/root-element/

On top, there is most likely no ES version with relative import paths.

I will double check this.