Use of `bind` for `reading.py` helpers

See !3395 (comment 5265156)

Use of bind makes it easier/cleaner to change output level in Moore options files]

https://gitlab.cern.ch/lhcb/LHCb/-/blob/master/PyConf/python/PyConf/tonic.py#L101

added Persistency label

assigned to @nskidmor

changed due date to February 23, 2022

changed due date to February 25, 2022

mentioned in merge request !3395 (merged)

changed the description

mentioned in merge request Moore!1342 (merged)

It would probably be best to document the feature that algorithms and tools can be configured with bind for example here: https://lhcbdoc.web.cern.ch/lhcbdoc/moore/master/pyconf/algorithms_tools_data_flow.html . It is probably not obvious that something imported from PyConf.Algorithms or PyConf.Tools is automatically @configurable. I can take care of that.

The doc in tonic.py is decent but yes this "automatically @configurable" is not obvious