Add operations and configuration support to UI #9
Description
Summary
Extend sovd_web_ui to consume new ros2_medkit_gateway endpoints for Configurations (ROS 2 parameters via REST) and Operations (ROS 2 services and actions via REST).
Restructure the entity tree to display a component's topics under data/, services and actions under operations/, and parameters under configurations/ subfolders.
Current state:
- Entity tree shows:
Area → Component → Topic - Only data endpoints are consumed (
/components/{id}/data)
Desired state:
- Entity tree shows:
Area → Component → data/ | operations/ | configurations/ - Full CRUD support for configurations (list, get, set)
- Full support for operations (invoke service, send action goal, monitor status, cancel)