Actual shadow filtering

Update dependencies

Fix new buffer binding padding requirement

Allow glTF to populate a BVH

Improving geometry layout deduping

Update to latest WebGPU/WGSL syntax

Working on a BVH implementation

Get rid of gap between shadow cascades. Still no blurring between levels.

Setting up gh-pages deployment

Lots more tweaking

Better bounds calculations

Tweaks

Functioning CSM!

Almost have Cascading Shadow Maps working. Just need to select right cascade in the shader.

Getting rid of some components this project doesn't need.