ArrayCamera: Convert to es6 class. (#21407)

* refact to use es6

* refact to es6

* fix build

* fix lint

* fix static methods.

* revert EventDispatcher.js since it is converted by someone else

* revert PropertyBindings.js since it is converted by someone else

* revert Camera.js and PerspectiveCamera.js, since it break the test.

Author: beginor

src/cameras/ArrayCamera.js

@@ -1,20 +1,18 @@
 import { PerspectiveCamera } from './PerspectiveCamera.js';
 
-function ArrayCamera( array = [] ) {
+class ArrayCamera extends PerspectiveCamera {
 
-	PerspectiveCamera.call( this );
+	constructor( array = [] ) {
 
-	this.cameras = array;
+		super();
 
-}
-
-ArrayCamera.prototype = Object.assign( Object.create( PerspectiveCamera.prototype ), {
+		this.cameras = array;
 
-	constructor: ArrayCamera,
+	}
 
-	isArrayCamera: true
+}
 
-} );
+ArrayCamera.prototype.isArrayCamera = true;
 
 
 export { ArrayCamera };