add EPIC detector, simulation and project

NPLib/Detectors/Epic/CMakeLists.txt

NPLib/Detectors/Epic/TEpicData.cxx

NPLib/Detectors/Epic/TEpicData.h

NPLib/Detectors/Epic/TEpicPhysics.cxx

NPLib/Detectors/Epic/TEpicPhysics.h

NPLib/Detectors/Epic/TEpicSpectra.cxx

NPLib/Detectors/Epic/TEpicSpectra.h

NPSimulation/Detectors/Epic/CMakeLists.txt

NPSimulation/Detectors/Epic/Epic.cc

NPSimulation/Detectors/Epic/Epic.hh

Projects/Epic_sim_proto/Analysis.cxx

Projects/Epic_sim_proto/Analysis.h

Projects/Epic_sim_proto/CMakeLists.txt

Projects/Epic_sim_proto/Epic.detector