Starting development of ProtoDUNE-VD check tools

[YoannKermaidic]

• Estimation of electron lifetime from dQ/dx fit + angular distributions with specific VD requirement that track are going downwards
• Study of disambiguation by comparing reconstructed hits and tracks position.

[tomjunk]

I'll go ahead and merge this one, though there are a few std::couts that are not conditional on the log level, and thus might clutter up a logfile with messages that are hard to know the origin of. But given that it is your own analyzer and not run in general, you can clean them up.

[YoannKermaidic]

Thanks for the catch, we will clean them up in the coming push.