WebGL testing script

Installation

1. Install node/npm in the box where you want to run this
2. Do npm install
3. For a kubernetes pod install (or vm in GCP) dependencies with npm run install-deps
4. Run
   • In your local box (like a MacBook) you should be able to just run npm run
   • In kubernetes or vm, you should run with npm run k8-start with runs the thing under an xvfb server