Add functionality to time how long a test case should run

[Thecarisma]

If the test case executes beyond the expected time it should fail with ExecutionBeyoundTimeError or something.
There is no need to introduce a thread it should work in multiprocess so the main process can time how long it starts running and if it beyond the time it kills the test case process and reports it,

There should also be an option to allow it to execute complete and report the time the execution completes and the time it expected to complete so it fails on the differences.