Add auxilary functionality to Run2 -> Run3 tigger nav converter to print all chain features

As it turns out that it is not easy to figure out what features are used in which chains this MR adds a printer function that just prints all of them for a given chain and for an event.

This printing can be enabled in

RunNavDump.py
+    alg.onlyFeaturePrinting=True

Then, in the log messages like these can be seen:

TrigNavCnv                                           INFO chain HLT_xe130_L1XE60 features 1 [xAOD::TrigMissingET#TrigEFMissingET]

Obviously, for any given event, the chain can be failing and thus have only a few features. Such log file postprocessing would help to sort the chains in an order descending with the number of associated features.

grep chain log | sort | sort -n -k 6 -r | uniq | grep -v "features 0" | less Though I have not seen different cases than either many features or none.

grep "all event " log | sort -k 6 -n -r can be used to sort events in order of decreasing number of features.

Here is the list per chain made with AOD provided by Witold: http://tbold.web.cern.ch/tbold/per_chain.txt and per event: http://tbold.web.cern.ch/tbold/per_event.txt

FI. @wprzygod @tamartin