feature: connection status label

...i-plugins/SkillManagerPlugin/SkillManagerMonitorWidget.ui

...killManagerPlugin/SkillManagerMonitorWidgetController.cpp

source/RobotAPI/libraries/skills_gui/CMakeLists.txt

...e/RobotAPI/libraries/skills_gui/ConnectionStatusLabel.cpp

source/RobotAPI/libraries/skills_gui/ConnectionStatusLabel.h

source/RobotAPI/libraries/skills_gui/SkillMemoryGui.cpp

source/RobotAPI/libraries/skills_gui/SkillMemoryGui.h

...otAPI/libraries/skills_gui/memory/SkillManagerWrapper.cpp

...obotAPI/libraries/skills_gui/memory/SkillManagerWrapper.h