Add a QEMU / dyninst challenge

[mykter]

There isn't time to cover it in the typical 4hr format, but people might find it valuable to have in the materials to work on after or if they're doing it offline.

[TheJacobWalters]

Hi mykter. This training is HQ. Would this challenge help in learning how to fuzz IOT ARM firmware being emulated on x86?

[mykter]

thanks, and yup, it would!