Refactor code out of ArMemMemoryViewer

.../gui-plugins/ArMemMemoryViewer/ArMemMemoryViewerWidget.ui

...s/ArMemMemoryViewer/ArMemMemoryViewerWidgetController.cpp

...ins/ArMemMemoryViewer/ArMemMemoryViewerWidgetController.h

source/RobotAPI/libraries/armem_gui/CMakeLists.txt

source/RobotAPI/libraries/armem_gui/MemoryViewer.cpp

source/RobotAPI/libraries/armem_gui/MemoryViewer.h

source/RobotAPI/libraries/armem_gui/instance/GroupBox.cpp

source/RobotAPI/libraries/armem_gui/instance/GroupBox.h

...ce/RobotAPI/libraries/armem_gui/instance/InstanceView.cpp

source/RobotAPI/libraries/armem_gui/instance/InstanceView.h

...RobotAPI/libraries/armem_gui/instance/TreeDataVisitor.cpp

...e/RobotAPI/libraries/armem_gui/instance/TreeDataVisitor.h

...tAPI/libraries/armem_gui/instance/TreeDataVisitorBase.cpp

...botAPI/libraries/armem_gui/instance/TreeDataVisitorBase.h

...API/libraries/armem_gui/instance/TreeTypedDataVisitor.cpp

...otAPI/libraries/armem_gui/instance/TreeTypedDataVisitor.h

source/RobotAPI/libraries/armem_gui/memory/GroupBox.cpp

source/RobotAPI/libraries/armem_gui/memory/GroupBox.h

source/RobotAPI/libraries/armem_gui/memory/TreeWidget.cpp

source/RobotAPI/libraries/armem_gui/memory/TreeWidget.h