(Optional) Restbus simulation integration

[mrh1234]

Integration of an optional restbus simulation (disabled by default) that is currently started through the Edgar and also includes an ARXML parser. Currently, it is an rudimentary restbus simulation that is able to play the initial values of CAN messages defined in an ARXML file. It will get more sophisticated in the future and it will allow live modifications of the messages played to the bus. The idea is described in the documentation. It was successfully tested in practice.