Add code owners

.gitlab/CODEOWNERS

-/SimDynamics/ @patrickhegemann @fabian.reister
-/VirtualRobot/IK/platform @fabian.reister @dreher 
+/SimDynamics/ @patrickhegemann @reister
 
+/SimoxUtility/algorithm/get_map_keys_values.h @kartmann
+/SimoxUtility/caching/ @kartmann
+/SimoxUtility/color/ @kartmann
+/SimoxUtility/json/ @kartmann
+/SimoxUtility/math/pose/ @kartmann
+/SimoxUtility/math/statistics/ @kartmann
+/SimoxUtility/math/SoftMinMax.* @kartmann
+/SimoxUtility/meta/EnumNames.hpp @kartmann
+/SimoxUtility/meta/type_name.* @kartmann
+/SimoxUtility/shapes/AxisAlignedBoundingBox.* @kartmann
+/SimoxUtility/threads/CountingSemaphore.* @kartmann
+
+/VirtualRobot/IK/platform @reister @dreher
+/VirtualRobot/MJCF/ @kartmann
+/VirtualRobot/Nodes/HemisphereJoint/ @kartmann
+/VirtualRobot/Nodes/RobotNodeHemisphere.* @kartmann
+/VirtualRobot/XML/mujoco/ @kartmann