ske: Generate emscripten data bundle without needing emscripten itself.

[marekmaskarinec]

Original issue:

~mrms/tophat#14

Initial message:

I think it's possible to generate an emscripten .data file, without needing emscripten itself. The rationale is that emscripten is an incredibly cumbersome tool to setup, and most novice users, will not want to mess with it.

mrms

I generally agree, but in my experience on linux mint, emscripten was really easy to setup.

[ske2004]

I think I've mentioned this, but there's a python script that does just that - https://github.com/emscripten-core/emscripten/blob/main/tools/file_packager.py