Added Gui Use Cases for easier starting with ArmarX

data/ArmarXGui/GuiDefaultConfigs/ScenarioControl.armarxgui

data/ArmarXGui/GuiDefaultConfigs/Statecharts.armarxgui

source/ArmarXGui/applications/ArmarXGui/ArmarXMainWindow.cpp

source/ArmarXGui/applications/ArmarXGui/ArmarXMainWindow.h

source/ArmarXGui/applications/ArmarXGui/ArmarXMainWindow.ui

source/ArmarXGui/applications/ArmarXGui/CMakeLists.txt

...Gui/applications/ArmarXGui/Widgets/GuiUseCaseSelector.cpp

...rXGui/applications/ArmarXGui/Widgets/GuiUseCaseSelector.h

...XGui/applications/ArmarXGui/Widgets/GuiUseCaseSelector.ui

...ui/applications/ArmarXGui/Widgets/UseCaseSelectorItem.cpp

...XGui/applications/ArmarXGui/Widgets/UseCaseSelectorItem.h

...Gui/applications/ArmarXGui/Widgets/UseCaseSelectorItem.ui