replace stereo module with depth module

[SamerKhshiboun]

Tracked by [DSO-18538]

Replace Info and Debug output including "Stereo Module" with "Depth Module"
Used "rs2_to_ros" function, which is in a common use inside our ROS wrapper, but was missing in some other places.

For example:

with new change, service sensor output includes depth_module instead of stereo_module

administrator@perclnx466 ~/ros2_humble $ ros2 service call /camera/device_info realsense2_camera_msgs/srv/DeviceInfo
requester: making request: realsense2_camera_msgs.srv.DeviceInfo_Request()

response:
realsense2_camera_msgs.srv.DeviceInfo_Response(device_name='intel_realsense_d435i', serial_number='912112073098', firmware_version='5.13.0.54', usb_type_descriptor='3.2', firmware_update_id='012345678901', sensors='depth_module,rgb_camera,motion_module', physical_port='/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2:1.0/video4linux/video0')

also when launching / stopping the node, new changes are on (depth module instead of stereo module):

[realsense2_camera_node-1] [INFO] [1681232696.776424459] [camera.camera]: Stopping Sensor: Depth Module
[realsense2_camera_node-1] [INFO] [1681232696.800069233] [camera.camera]: Starting Sensor: Depth Module
[realsense2_camera_node-1] [INFO] [1681232696.854024481] [camera.camera]: Open profile: stream_type: Depth(0), Format: Z16, Width: 848, Height: 480, FPS: 30
[realsense2_camera_node-1] [INFO] [1681232767.603262833] [camera.camera]: Stop Sensor: Depth Module
[realsense2_camera_node-1] [INFO] [1681232767.603350548] [camera.camera]: Close Sensor.
[realsense2_camera_node-1] [INFO] [1681232767.614454247] [camera.camera]: Close Sensor - Done.

also when running with log_level:=debug, the changes are on (depth module instead of stereo module)

[realsense2_camera_node-1] [DEBUG] [1681233253.327902192] [camera.camera]: Set Depth Module as VideoSensor.
[realsense2_camera_node-1] [DEBUG] [1681233253.448831225] [camera.camera]: Depth Module:active_profiles.size() = 0
[realsense2_camera_node-1] [DEBUG] [1681233253.448852202] [camera.camera]: Depth Module:wanted_profiles

[Nir-Az]

LGTM
@SamerKhshiboun need to notify Val team?