Added ability to register custom event loggers
Added ability to register custom event loggers

Until now it was not possible to register your own event logger
in the event-logging module due to inaccessible packages.
This commit adds the required exports to the event-logging module,
to allow registration of the default loggers or own implementations.

Change-Id: Ib45a681a82aec1ef7d1a338b38a6d3d99c6ae8cf

frankhuster/modules,tstalka/modules,ngraczewski/modules,atish160384/modules,1stmateusz/modules,pgesek/modules,ngraczewski/modules,pgesek/modules,koshalt/modules,wstrzelczyk/modules,frankhuster/modules,mkwiatkowskisoldevelo/modules,shubhambeehyv/modules,pmuchowski/modules,frankhuster/modules,1stmateusz/modules,ScottKimball/modules,justin-hayes/modules,ScottKimball/modules,mkwiatkowskisoldevelo/modules,pmuchowski/modules,shubhambeehyv/modules,LukSkarDev/modules,wstrzelczyk/modules,ScottKimball/modules,LukSkarDev/modules,mkwiatkowskisoldevelo/modules,koshalt/modules,LukSkarDev/modules,sebbrudzinski/modules,martokarski/modules,justin-hayes/modules,koshalt/modules,tstalka/modules,smalecki/modules,sebbrudzinski/modules,LukSkarDev/modules,koshalt/modules,shubhambeehyv/modules,pmuchowski/modules,tstalka/modules,smalecki/modules,justin-hayes/modules,pgesek/modules,pmuchowski/modules,atish160384/modules,tstalka/modules,1stmateusz/modules,1stmateusz/modules,smalecki/modules,sebbrudzinski/modules,ngraczewski/modules,shubhambeehyv/modules,martokarski/modules,mkwiatkowskisoldevelo/modules,wstrzelczyk/modules,pgesek/modules,wstrzelczyk/modules,martokarski/modules,atish160384/modules,ScottKimball/modules,smalecki/modules,atish160384/modules,ngraczewski/modules,frankhuster/modules,sebbrudzinski/modules,martokarski/modules,justin-hayes/modules