Explore dynamic loading of low / medium / high resolution assets

[PlumCantaloupe]

A-Frame does not currently provide a way to load in assets conditionally on platform i.e. load in lower resolution assets for mobile platforms, but there are some potential ways forward:

• [hard] We could modify a-frame loading of assets
• [not as hard] we could potentially use of server pre-processing of each world's index.html to create multiple index.html's that load different assets i.e. index_low.html, index_high.html etc. Each page could then be loaded depending on whether the client requesting is detected as mobile, desktop, Quest etc.
• ???

This could be related to the LOD issue #152 ...

[MarkMcGregor-dev]

Finding some useful things:

• Article for general optimization practices in WebXR
• Geometry merger component
• Manual LOD component
• The THREE.JS LOD object