Bindings for internal EPR logging API

[avalentino]

The part of the EPR API regarding logging and logging is not currently exposed to python.
Add support for that part of the API.

[avalentino]

Ir would be nice, also, to have a bridge between the EPR logging API and the logging package of the standard python library (PyEPR HL API).
Probably this should be tracked in a separate issue once this one is closed.