tauRec/tauRecTools: use unique pointer to manage memory (ATLASRECTS-5155)

Reconstruction/tauRec/src/TauProcessorAlg.cxx

Reconstruction/tauRec/src/TauRunnerAlg.cxx

Reconstruction/tauRec/tauRec/TauRunnerAlg.h

Reconstruction/tauRecTools/Root/CombinedP4FromRecoTaus.cxx

Reconstruction/tauRecTools/Root/HelperFunctions.cxx

Reconstruction/tauRecTools/Root/MvaTESEvaluator.cxx

Reconstruction/tauRecTools/Root/TauCalibrateLC.cxx

Reconstruction/tauRecTools/Root/TauJetBDTEvaluator.cxx

Reconstruction/tauRecTools/Root/TauPi0ScoreCalculator.cxx

Reconstruction/tauRecTools/Root/TauTrackClassifier.cxx

Reconstruction/tauRecTools/Root/TauWPDecorator.cxx

...truction/tauRecTools/tauRecTools/CombinedP4FromRecoTaus.h

Reconstruction/tauRecTools/tauRecTools/HelperFunctions.h

Reconstruction/tauRecTools/tauRecTools/MvaTESEvaluator.h

Reconstruction/tauRecTools/tauRecTools/TauCalibrateLC.h

Reconstruction/tauRecTools/tauRecTools/TauJetBDTEvaluator.h

...struction/tauRecTools/tauRecTools/TauPi0ScoreCalculator.h

Reconstruction/tauRecTools/tauRecTools/TauTrackClassifier.h