Adding PISTA (Trapezoidal silicon telescope detector) detector to NPTool

NPLib/Detectors/PISTA/CMakeLists.txt

NPLib/Detectors/PISTA/TPISTAData.cxx

NPLib/Detectors/PISTA/TPISTAData.h

NPLib/Detectors/PISTA/TPISTAPhysics.cxx

NPLib/Detectors/PISTA/TPISTAPhysics.h

NPLib/Detectors/PISTA/TPISTASpectra.cxx

NPLib/Detectors/PISTA/TPISTASpectra.h

NPSimulation/Detectors/PISTA/CMakeLists.txt

NPSimulation/Detectors/PISTA/PISTA.cc

NPSimulation/Detectors/PISTA/PISTA.hh

Projects/PISTA/Analysis.cxx

Projects/PISTA/Analysis.h

Projects/PISTA/CMakeLists.txt

Projects/PISTA/PISTA.detector