Add Configuration and utilities from Allpix Squared

src/core/config/ConfigManager.cpp

src/core/config/ConfigManager.hpp

src/core/config/ConfigReader.cpp

src/core/config/ConfigReader.hpp

src/core/config/Configuration.cpp

src/core/config/Configuration.hpp

src/core/config/Configuration.tpp

src/core/config/exceptions.cpp

src/core/config/exceptions.h

src/core/utils/exceptions.h

src/core/utils/file.h

src/core/utils/log.cpp

src/core/utils/log.h

src/core/utils/string.h

src/core/utils/type.h

src/core/utils/unit.cpp

src/core/utils/unit.h