NodeMaterial: Accessing modules from Node lib

[sunag]

Description

It can simplify the NodeMaterial creation by reducing the number of imports needs.

Usage:

import * as Nodes from './jsm/renderers/nodes/Nodes.js';

const material = new Nodes.MeshStandardNodeMaterial();
material.colorNode = new Nodes.ColorNode( new THREE.Color( 0x0000FF ) );

This contribution is funded by Google via Igalia.

[Mugen87]

The change looks good! It's nice to have the possibility to import the node classes via a single import.

I just wonder if we should updated the examples. I know it's matter of personal preference but I like the direct imports a bit more than using the Nodes. prefix.

@mrdoob How do you feel about this?

[mrdoob]

I prefer the Nodes prefix. Makes the examples simpler.

[mrdoob]

Thanks!