Implement eldritch time.sleep function

[hulto]

Is your feature request related to a problem? Please describe.
Now that realm supports long running jobs one of the cool things we should enable is constantly updating tasks.
For example if you want to get the latest status of the process list or firewall rules instead of requeue the tome we can have looped tasks that would look like this:

def check_firewall():
    while true:
        print(sys.shell("iptables -L")['stdout'])
        time.sleep(5*60)

check_firewall()

In order to support this though we need a way to pause a tomes execution otherwise it will constantly loop.

Describe the solution you'd like
Implement a time.sleep function.

Describe alternatives you've considered
Calling the native system sleep will cause weird process tree artifacts.

Additional context
Na