rename -> singular Base/Util

Base/Axis/ConstKBinAxis.cpp

Base/Axis/CustomBinAxis.cpp

Base/Axis/FixedBinAxis.cpp

Base/Axis/VariableBinAxis.cpp

Base/Py/PyUtils.cpp

Base/Util/Algorithms.h

Base/Util/Assert.h

Base/Util/FileSystemUtils.cpp

Base/Util/FileSystemUtils.h

Base/Util/IFactory.h

Base/Util/PyFmt.cpp

Base/Util/PyFmt.h

Base/Util/StringUtils.cpp

Base/Util/StringUtils.h

Base/Util/SysUtils.cpp

Base/Util/SysUtils.h

Base/Util/ThreadInfo.h

Core/Computation/DepthProbeComputation.cpp

Core/Contrib/GISASSpecularContribution.cpp

Core/Contrib/RoughMultiLayerContribution.cpp