WebGPURenderer: Tree-shaking 1/2 - revision

[sunag]

Related issue: #29187, #29187 (comment)

Description

• Added a lot of /*@__PURE__*/
• Rename registerNodeClass -> registerNode
• Added registerNodeMaterial
• registerNode & registerNodeMaterial -- Introduce support for tree-shaking
• Fix node.type and nodeMaterial.type

[github-actions]

📦 Bundle size

Full ESM build, minified and gzipped.

Filesize dev	Filesize PR	Diff
685.4 kB (169.7 kB)	685.4 kB (169.7 kB)	+0 B

🌳 Bundle size after tree-shaking

Minimal build including a renderer, camera, empty scene, and dependencies.

Filesize dev	Filesize PR	Diff
462 kB (111.4 kB)	462 kB (111.4 kB)	+0 B