Global verbose

While logging is supported many of us still rely on the good ol' `print` for debugging. Do you thing we should add a `verbose` variable of type `bool` (Default `False`) to the settings class and print various things (like name of model, model response, logging status, etc...)?

Start by locating the settings class and the existing logging or print call sites mentioned in the issue. Clarify which diagnostic output verbose mode should control, then verify that its default is False and that the selected output appears only when enabled.

Written by the indexing model from the issue text.