Write a Python wrapper for a GENERIC component

[jklaise]

Currently we lack the capability to wrap GENERIC components using the Python wrappers. Having this would enable people to write fully custom Python components. Extra potential benefits:

• Writing a component as GENERIC would enable using it in many roles of the inference graph (e.g. using an outlier detector as a model in it's own right or as a supporting component for the main model)
• Could simply Python wrappers code to only have one module doing the wrapping for all types of components