First version of Histogram1D and Histogram2D

Core/PythonAPI/inc/Histogram1D.pypp.h

Core/PythonAPI/inc/IHistogram.pypp.h

Core/PythonAPI/inc/PythonCoreList.h

Core/PythonAPI/src/Histogram1D.pypp.cpp

Core/PythonAPI/src/IHistogram.pypp.cpp

Core/PythonAPI/src/PythonModule.cpp

Core/Tools/inc/CumulativeValue.h

Core/Tools/inc/Histogram1D.h

Core/Tools/inc/Histogram2D.h

Core/Tools/inc/IHistogram.h

Core/Tools/src/Histogram1D.cpp

Core/Tools/src/Histogram2D.cpp

Core/Tools/src/IHistogram.cpp

Fit/PythonAPI/src/PythonModule.cpp

Tests/UnitTests/TestCore/main.cpp

dev-tools/python-bindings/settings_core.py

dev-tools/python-bindings/utils_build.py