[Simulation] Follow Aruco tag using sim camera in Gazebo

[renzodamgo]

Prerequisites:

• None

Acceptance Criteria:

• Rover should rotate looking for aruco tags
• If detected rover should rotate till aruco tag is in the middle of the camera
• Rover should go forward towards the aruco tag
• If the aruco is not in the middle of the camera anymore the rover should stop and correct positioning
• Repeat till aruco tag is close enough and stop robot

Optional:

• Print Id of aruco tag
• Receive aruco ID tag, when it recieves the tag the process starts and the robot starts searching for the aruco tag.

Plan:

1. Create node aruco_follower_node.py
2. Subscribe to camera/image_raw
3. Get camera feed and apply aruco script with OpenCV
4. Publish to rover_controller/cmd_vel linear and angular values to move the robot

* all topics should be available running the simulated_robot launch file
* It's possible to see camera output using rviz2 and rqt with the image viewer plugin