Add functionality to crash at a random point after script starts execution

[deutranium]

At the moment, the call to crash or not happens directly during import, but it can be changed to an async call, or a background process which executes at a certain delay once the script has been called.

A few potential solutions/problems can be:

1. If we add sys.exit() as an async function which executes after a time t, choice of this time will have a big impact. Eg. if t is 5 seconds when the entire script is supposed to take say 2 seconds, we have an issue
2. Another potential solution can be execution of the package code once a certain proportion of the victim script has executed. However, I'm not very sure how to approach this, or even python allows such things in the first place