Remove customInit method

[kalwalt]

Actually customInit is not useful at all, and does not serve the purpose i intended, that's it modify propertieson the fly before initialization. So there is no point in keeping it and I plan to implement other methods more suitable for the purpose.

[kalwalt]

I haven't specified the static customInit method is inside ARControllerNFT:

jsartoolkitNFT/src/ARControllerNFT.ts

Lines 265 to 280 in e4a11dc

	static async customInit(
	width: number,
	height: number,
	cameraParam: string,
	internalLuma: boolean,
	callback: () => void,
	): Promise<ARControllerNFT> {
	const arControllerNFT = new ARControllerNFT(
	width,
	height,
	cameraParam,
	internalLuma,
	);
	callback();
	return await arControllerNFT._initialize();
	}

and in the simd and td versions.
The problem is in the callback? because is an async method?