convert L1 e/gamma trigger to tau

Event/xAOD/xAODTrigger/Root/EmTauRoI_v2.cxx

Event/xAOD/xAODTrigger/xAODTrigger/versions/EmTauRoI_v2.h

Trigger/TrigL1Upgrade/TrigL1CaloUpgrade/CMakeLists.txt

...TrigL1Upgrade/TrigL1CaloUpgrade/src/TrigT1CaloBaseFex.cxx

...r/TrigL1Upgrade/TrigL1CaloUpgrade/src/TrigT1CaloBaseFex.h

...er/TrigL1Upgrade/TrigL1CaloUpgrade/src/TrigT1CaloEFex.cxx

Trigger/TrigL1Upgrade/TrigL1CaloUpgrade/src/TrigT1CaloEFex.h

...gL1Upgrade/TrigL1CaloUpgrade/src/TrigT1CaloRun3TauFex.cxx

...rigL1Upgrade/TrigL1CaloUpgrade/src/TrigT1CaloRun3TauFex.h

...1CaloUpgrade/src/components/TrigL1CaloUpgrade_entries.cxx