[Feature] Serialise executors #260
Description
As the Executors in pympipool typically use zmq to connect the executor to the process which is executing the functions it should in principle be possible to serialise the executor - store the information of the executor - and then deserialise the same object again. Still it is not clear what happens to the messages already submitted and in addition it is also not clear if the server process is started by the executor or by the process executing the python functions.