Extension:EmbedScript/Studio

Concept ideas


 * modules
 * assets
 * JS code
 * HTML ?
 * CSS ?
 * SVG images
 * PNG or JPEG images ?

JS and CSS *could* be sent as URLs and direct-loaded, this will make debugging easier than turning everything into a magic closure.

Module composition usage examples:
 * generic 'map/place game'
 * instantiate it with a new SVG map and set of parameters
 * in another place, do it with another