Move mesh data into npm packages

[hughsk]

@mikolalysenko the JSON mesh data is bringing the unpacked project size over 100MB. As a result, npm publish takes me half an hour which makes debugging/triaging issues really hard :( Would you be able to move these into their own packages? Thanks!

[mikolalysenko]

Actually, this could be a good test case for the 3p codec.

[hughsk]

Oh yeah, definitely! :)