add author attribution to csm

examples/jsm/csm/CSM.js

+/**
+ * @author vHawk / https://github.com/vHawk/
+ */
+
 import {
 	Vector2,
 	Vector3,

examples/jsm/csm/Frustum.js

+/**
+ * @author vHawk / https://github.com/vHawk/
+ */
+
 import { MathUtils, Vector3 } from '../../../build/three.module.js';
 import FrustumVertex from './FrustumVertex.js';
 

examples/jsm/csm/FrustumBoundingBox.js

+/**
+ * @author vHawk / https://github.com/vHawk/
+ */
+
 export default class FrustumBoundingBox {
 
 	constructor() {

examples/jsm/csm/FrustumVertex.js

+/**
+ * @author vHawk / https://github.com/vHawk/
+ */
+
 export default class FrustumVertex {
 
 	constructor( x, y, z ) {

examples/jsm/csm/Shader.js

+/**
+ * @author vHawk / https://github.com/vHawk/
+ */
+
 import { ShaderChunk } from '../../../build/three.module.js';
 
 export default {