Implement setup execution mode

[AxelKrypton]

At some point it will be time to take a decision about this aspect. It might be worth implementing an internal setup mechanism for the handler to let the user run a setup and provide information that is stored somewhere. For example, I can imagine that the handler on a super computer will always be used with the same executable and one might not be willing always have this information in the configuration file. On the other hand, if such an information is not that much, the effort of having a new execution mode and a somewhat complex mechanism (the setup should be re-runnable at any time to change stuff) might be avoided.