WASM Port

[marwatk]

I ported wxWabbitemu to WASM here. You can see it working here. Best viewed on mobile. I ported it because I missed the app when switching to iPhone from Android.

I only have a TI-85 so only made a skin for it, but the skins are just CSS and should be easy to add more.

I gutted a lot of code to make it happen quickly, but could switch to #ifdefs if there's interest in merging it back in here. Let me know!