added path to converters (fixes exception when directly submitting data to the memory with wrong paths and the remote gui)

first working version of skill memory with working component plugins

# Conflicts:
#	source/RobotAPI/components/armem/server/SkillsMemory/CMakeLists.txt
#	source/RobotAPI/libraries/armem/CMakeLists.txt
#	source/RobotAPI/libraries/armem_mps/CMakeLists.txt
#	source/RobotAPI/libraries/armem_mps/server/MotionPrimitives/motionprimitives.cpp
#	source/RobotAPI/libraries/armem_mps/server/MotionPrimitives/motionprimitives.h

Resolve "Split armem into core and server lib"

Closes #67

See merge request ArmarX/RobotAPI!202

# Conflicts:
#	source/RobotAPI/libraries/armem_gui/CMakeLists.txt

added componentplugins for skillmemory server, started to implement important functions for skillproviders

Missing armem dependency

See merge request ArmarX/RobotAPI!203

fix: RobotAPI/libraries/armem_robot_state/client/common/VirtualRobotReader: forgot to forward loadMode

implemented navigate functions, added convenience methods to variant visitors where input is already casted, removed aron include from visitors header files (only forward_declarations), fixed missing aron includes, added static methods to visitors to remove code duplication for visitors and converters

Resolve "Copy NDArrays as human-readable JSON"

Closes #66

See merge request ArmarX/RobotAPI!201

added segments for skills and skillexecutions
moved code from statechart listener from own component into skillsmemory