feat: Ship a lighting/materials package

[iwoplaza]

It would be nice to not reinvent/copy around implementations for Phong lighting, or PBR, but install them as a package. We could also ship various shadow mapping utilities, normal mapping, POM, etc.

Is there anything else that would make sense to put along side these utils?

Name ideas:

• @typegpu/lighting
• @typegpu/material

[shawn0326]

Great initiative! I'm really excited about the future ecosystem development — this solves a real pain point.

In addition to the mentioned features, I'd love to see:

• PMREM (Pre-filtered Mipmaped Radiance Environment Map) — essential for high-quality IBL (Image-Based Lighting)
• IBL utilities — comprehensive image-based lighting support
• Post-effects:
  • SSR (Screen Space Reflections)
  • GTAO (Ground Truth Ambient Occlusion)
• Anti-aliasing techniques — FXAA, SMAA, TAA, and other AA methods for better visual quality

These are commonly needed in modern rendering pipelines, and having them as standardized, well-tested packages would be incredibly valuable for the ecosystem.