Implement init TrackMatching Code and remove GEMDigiAnalyzer on MuonGEMDigis.

Dear experts,

I implemented "TrackMatching" code to this module in order to plot efficient code.

This code is not finished yet but it can be compiled though. I will update full code soon. 

GEMDigiAnalyzer was copied from "GEMCode"'s GEMDigiAnalyzer for reference.

However, it had problem between original code and this plugin  due to same name.

So, I removed source and header files about "GEMDigiAnalyzer".

Thanks. Have a nice day!