Use single cubemap camera in lidar

[iche033]

🦟 Bug fix

Summary

Minor resource optimization in lidars. Cameras can use quite a bite of memory. Originally lidars may use up to 6 cubemap cameras (depending on FOV) for sampling depth data. This PR reduces it to just one single cube camera that just changes its orientation to face the 6 different faces of the cubemap for sampling depth data. This is similar to how lidars in the ogre 1.x implementation sample data.

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.