Axis JS scene format

Axis can encode its native scene file format, the AXS into a .js
This is provided so that 3D scene can be embedded into a JavaScript or an HTML file.
This way a web page which displays a 3D scene can be contained in a single .html file.
Also, for offline HTML, where there is no web server available to serve resource files such as .axs scenes, a scene can be encoded in a .js file and safely referenced by the html, or simply embedded into the html