* New logger module supports js/wasm build by skipping the dependency on
ssh/terminal (which detected interactive consoles, not applicable to
JS). In WASM the logs go to the browser console and ANSI color codes
not needed.
* Add the JavaScript system for Doodads to run their scripts in levels,
and wire initial OnCollide() handler support.
* CLI: Add a `doodad install-script` command to the doodad tool.
* Usage: `doodad install-script <index.js> <filename.doodad>`
* Add dev-assets folder for storing source files for the official
default doodads, sprites, levels, etc. and for now add a JavaScript
for the first test doodad.
