PHP 8.1/8.2 Support

[jzahedieh]

I've had to fork this repo to allow to install it with PHP 8.1, this looks fine for now.

sdksupport@yoti.com email is no longer working.

[ConnectGrid]

It looks like this version of the SDK is not being maintained. Not only is support for PHP 8.x not available, but it also requires an older version of the production SDK.

Would be nice to learn if they are still recommending this package, or if we should just use the production SDK in testing?