Include the new e/g monitoring into trig egamma monitoring package

include new e/g monitoring into trig egamma monitoring package and change somethings into the core of the trig e/g matching tool.

This is a new design of the trig e/g monitoring without the ASG. This design follow the same idea of the other groups.

Its not ready but I would like to share with the group to check if this design attend to the monitoring requirements.

Inheritance schema: AthMonitoring <- TrigEgammaMonitorBaseAlgorithm <- TrigEgammaMonitorAnalysisAlgorithm <- TrigEgammaMonitorTagAndProbeAlgorithm.

• TrigEgammaMonitorBaseAlgorithm: Hold all e/g accessor methods, matching, tdt, pid tools;
• TrigEgammaMonitorAnalysisAlgorithm: Hold all fill histograms methods (efficiency, resolution and distribution);
• TrigEgammaMonitorTagAndProbeAlgorithm: select probe events and fill;

Ticker: ATR-19998

The make doc can be found here: /afs/cern.ch/user/j/jodafons/public/docs_triggerEgammaMonitoring

Ping: @fernando , @thrynova , @mverissi , @wsfreund , @tbold and @fwinkl

I hope this will work for us! :)