Make EntityInstanceBase hold metadata and data

source/RobotAPI/libraries/armem/CMakeLists.txt

...RobotAPI/libraries/armem/core/base/EntityInstanceBase.cpp

...e/RobotAPI/libraries/armem/core/base/EntityInstanceBase.h

...PI/libraries/armem/core/longtermmemory/EntityInstance.cpp

...tAPI/libraries/armem/core/longtermmemory/EntityInstance.h

...API/libraries/armem/core/workingmemory/EntityInstance.cpp

...otAPI/libraries/armem/core/workingmemory/EntityInstance.h

...s/armem/core/workingmemory/entityInstance_conversions.cpp

...ies/armem/core/workingmemory/entityInstance_conversions.h

...PI/libraries/armem/core/workingmemory/ice_conversions.cpp

.../server/query_proc/workingmemory/EntityQueryProcessor.cpp