Heavy flavor electron analysis

Originally written by Ajeeta Khatiwada. Contributions from Adam Tilley and Kip Hunt.

This analysis may have some subtle details with electron selection which need care. This looks right but I might prefer to double check on the Rivet Mattermost to make sure we did this right.

Bottom fractions and RAA should be plotted on a linear scale. Some of the histograms which do not have data should be turned off, perhaps all of them.

Needs bin shift correction

Update: added beam shift and fixed .plot