Benchmarking suite

[0xricksanchez]

AFL_Runner is going to have a feature set to spit out various campaign configurations for AFL++. It would be very interesting to have a benchmarking option that runs n fuzzing campaigns each with k different configurations (default, best-in-slot, custom, random, ...) to see how much of a difference those specific feature flags may have on a campaign.

The general gut-feeling is that it's very target-dependent but at the end of the day numbers proving this would be fire