Move Prediction.{h,cpp} to armem/core

...I/components/armem/server/ExampleMemory/ExampleMemory.cpp

...API/components/armem/server/ObjectMemory/ObjectMemory.cpp

source/RobotAPI/libraries/ArmarXObjects/predictions.cpp

source/RobotAPI/libraries/ArmarXObjects/predictions.h

source/RobotAPI/libraries/armem/CMakeLists.txt

source/RobotAPI/libraries/armem/client/Reader.h

source/RobotAPI/libraries/armem/core/Prediction.cpp

source/RobotAPI/libraries/armem/core/Prediction.h

...PI/libraries/armem/server/plugins/ReadWritePluginUser.cpp

...obotAPI/libraries/armem_objects/server/instance/Segment.h

...ibraries/armem_objects/server/instance/SegmentAdapter.cpp

...RobotAPI/libraries/armem_objects/server/instance/Visu.cpp