Test ORB-SLAM3 with elevation mapping

[ylenianistico]

We want to use ORB-SLAM3 to get the camera pose that will be read by the elevation mapping package. Everything runs on our laptops, which will be connected to the robot through the long cable that we already tested in the past.

• RGB-D ORB-SLAM3 working. @SaeidAbdollahi tested it
• RGB-D Inertial ORB-SLAM3 is still ongoing. @git-gfischer and @ylenianistico will try to have a look and fix the problem. Check this