Feature / SimulationModeMachine: add option to (not) replace drivers with GcodeServer

[markmaker]

Description

Make it optional to replace drivers with GcodeServer in simulation mode. The new option defaults to true, i.e., it behaves as before.

Justification

It can make sense to drive external controllers using the simulation machine, performing a simulated job.

See actual example here:
https://groups.google.com/g/openpnp/c/IshRY1IM80w/m/cmKHbbO6BQAJ

Instructions for Use

The new option is on the Simulation Mode tab of the machine:

After changing the option, press Apply and disable and re-enable the machine for the new option state to become effective.

Implementation Details

1. Tested in simulation, the optional driver replacing works.
2. Did follow the coding style.
3. No changes in the org.openpnp.spi or org.openpnp.model packages.
4. Successful mvn test before submitting the Pull Request.