New TestToyExperiment to test whole fitting chain

App/App.pro

App/inc/IsGISAXSTools.h

App/inc/ROOTMinimizerFunction.h

App/inc/TestFumiliLMA.h

App/inc/TestToyExperiment.h

App/src/FunctionalTestFactory.cpp

App/src/IsGISAXSTools.cpp

App/src/ROOTMinimizer.cpp

App/src/ROOTMinimizerFunction.cpp

App/src/TestFumiliLMA.cpp

App/src/TestToyExperiment.cpp

Core/Tools/inc/FitSuite.h

Core/Tools/inc/IMinimizer.h

Core/Tools/src/FitSuite.cpp