hello-amal

Feature Request: More granular control of Quality of Service (QoS)

4

### Issue Description As far as I can tell, currently `realsense_ros` only allows users to set one of the discrete quality of service (QoS) presets for its topics (code [here](https://github.com/IntelRealSense/realsense-ros/blob/598756b0ce337ed93e10af460a349022616a5750/realsense2_camera/src/ros_utils.cpp#L112))....

**Public API Changes** Add a `getPublishers` method to the `Ros` class, which returns all publishers for a topic. **Description** `rosapi` in `rosbridge` [exposes a `/rosapi/publishers` service to get all the...