Detect or add support for emulated software-based AES

We have registered many cases where people try to install QRL in unsupported older CPUs.

Although these CPUs will never be competitive with respect to mining, there are some factors that we need to consider:

people with older CPUs may still like to install a node to handle transactions locally, etc.
at the moment, there is no clear error message for this, so it has a bigger impact on our support effort.

The task would be to add a proper error message or ideally add support for software based AES to the qryptonight library.

While this issue is created here for tracking, I will soon open an identical issue in the qryptonight repo.

theQRL / QRL