Modify LiaScript Exporter to batch export multiple tutorial into one export

[bastiion]

Currently LiaScript exporter does not export multiple tutorials and produces a 14MB export with css, js, a ton of fonts,...
It should at least include all tutorials in this repo and build a bundle, where each tutorial has it's own html and shares the other resources.

[bastiion]

We decieded to use the liascript devserver for now, so this task has low prio and will be moved to backlog