skills updates

source/RobotAPI/libraries/skills/CMakeLists.txt

source/RobotAPI/libraries/skills/core/CMakeLists.txt

source/RobotAPI/libraries/skills/core/PeriodicSkill.cpp

source/RobotAPI/libraries/skills/core/PeriodicSkill.h

...botAPI/libraries/skills/core/PeriodicSpecializedSkill.cpp

...RobotAPI/libraries/skills/core/PeriodicSpecializedSkill.h

source/RobotAPI/libraries/skills/core/Skill.cpp

source/RobotAPI/libraries/skills/core/Skill.h

source/RobotAPI/libraries/skills/core/SkillContext.cpp

source/RobotAPI/libraries/skills/core/SkillContext.h

source/RobotAPI/libraries/skills/core/SkillDescription.cpp

source/RobotAPI/libraries/skills/core/SkillDescription.h

source/RobotAPI/libraries/skills/core/SkillProxy.cpp

source/RobotAPI/libraries/skills/core/SkillProxy.h

source/RobotAPI/libraries/skills/core/SpecializedSkill.cpp

source/RobotAPI/libraries/skills/core/SpecializedSkill.h

source/RobotAPI/libraries/skills/core/error/Exception.cpp

source/RobotAPI/libraries/skills/core/error/Exception.h

source/RobotAPI/libraries/skills/core/mixins/All.h

...e/RobotAPI/libraries/skills/core/mixins/ArvizSkillMixin.h