InDetTrackPerfMon: Adding TrackAnalysisPlotsMgr and TrackParametersPlots

Third iteration of the MR after !71136 (merged) and !71213 (merged). This MR adds the final utilities needed to create plots in this package:

• TrackAnalysisPlotsMgr: further (and final) wrapper around the PlotMgr class, which integrates the "TrackAnalysis" infrastructure thus allowing its inclusion in the workflow.
• TrackParametersPlots: first plots category class addressing the basic track parameters variables (pT, eta, etc.). These plot category classes are placed in the src/plots sub-directory for logistical reasons (since the number of categories is expected to grow significantly), to separate them from the main components of this package, and to allow for better documentation (dedicated README).

The (python) configuration for the various plotting utilities is also addressed here.