Allow users to set a timeout for a scripts execution

As a Scriptrunner user

I want to set timeouts for my scripts using a simple provided method like setTimeout(Seconds)

So that I can write scripts such as listeners and ensure that if they take to long, they will be forcibly stopped if they reach my designated timeout.

Notes:

Users can do this themselves by starting up a new thread in their script and using a join with a timeout. However, users have expressed that they would rather have a simple timeout method to control this instead of working with Threads in their scripts.