TrigPartialEventBuilding: Improve RoI and PEBInfo handling
Four changes are made:
- implement MaxRoIs option (ATR-19360)
- fix bug where eta value was used as phi
- use CxxUtils phihelper instead of just std::remainder
- always attach PEBInfo to decisions produced by PEBInfoWriterAlg (remains empty for rejected/skipped decisions), as suggested in the discussion
Edited by Rafal Bielski