Configuration parameters for different objects

[andrewpaulreeves]

Currently, knowing which configuration parameters are required can be a bit messy. Currently, the configuration parameters that are needed for a whole group of components are listed in the confparse.py module, but there is no distinction within this. For instance, a tip-tilt mirror does not require a number of actuators, but clearly the simulation should fail if a stack array DM is configured without this parameter.

Where and in what format the list of required parameters is put may need some further thought...