Remove type aliases from build/playcanvas.d.ts

[kungfooman]

This script turns code like this:

type AssetRegistry$2 = AssetRegistry$c;
type GraphicsDevice$3 = GraphicsDevice$l;
type ResourceHandler$3 = ResourceHandler$h;
/**
 * Resource handler used for loading {@link Sprite} resources.
 *
 * @implements {ResourceHandler}
 */
declare class SpriteHandler implements ResourceHandler$3 {

into this:

/**
 * Resource handler used for loading {@link Sprite} resources.
 *
 * @implements {ResourceHandler}
 */
declare class SpriteHandler implements ResourceHandler {

I didn't test it a lot yet, but at least VSCode finds no errors. Partly addresses #3995

This script doesn't "integrate" with bundling or anything, its just creating a new file build/playcanvas_new.d.ts via node types_bundle_undollar.mjs.

It only messes with classes that it could detect from the regexType, so classes with the same name as native classes (Touch etc.) are left as they are:

I confirm I have read the contributing guidelines and signed the Contributor License Agreement.

[willeastcott]

This is great - thanks! 🙌