Namespaces in scene entities

[ccpowers]

Currently, we are using visualization_msgs/Marker messages in Studio. I'd like to move to using the SceneEntity schema to allow annotations, but also want the namespaces feature (which allows us to hide/show markers by namespace in studio). Can namespaces be added to scene entities?

[lucafei]

yes, i think this is very useful and can also reduce gpu render consumption