Add a way to run the Simulator "until" a certain time (without ending the simulation)

[mkorbel1]

Motivation

Sometimes it might be helpful to run the simulator part of the way through, but then pause and perform some other activity.

Desired solution

Add a function to the Simulator, something perhaps like "Simulator.runUntil", or maybe an option to the existing Simulator.run.

Alternatives considered

No response

Additional details

No response