Strip core to render data and render graphs

Move glTF, picking, camera controls, and conventional handles into addons. Keep camera and material mutations in SIMD-aligned shared SOA rows and synchronize material updates directly into GPU buffers.

Amp-Thread-ID: https://ampcode.com/threads/T-01a01380-b478-77d0-84a0-102880a5c5ae
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>

addons/mesh-handles/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@yawn/mesh-handles",
   "version": "0.1.0",
-  "description": "Conventional mesh handles over the Yawn worker and shared-SOA protocol",
+  "description": "Conventional mesh, instance, camera, and material handles over Yawn render data",
   "type": "module",
   "exports": "./src/index.js",
   "dependencies": {