Feature lidar setup

[JanezCim]

Added LS lidar instructions to learn pages. This is a draft pull request because more discussion is yet to be done:

Unresolved questions:

• Since we are likely to add the LD lidar, we need to make sure we have the tutorials prepared for that. Now the biggest issue is that i still dont know how we are going to be calling this lidar in the tutorials. Internally we define them as LS and LD lidars, but since we want to be branding the LS lidar as our own, what the heck do we call it in the tutorials? I've refered to it as magni-default lidar or ubiquity robotics lidar?
• The same question for little LS lidar - are we branding it as UR lidar? If yes, how do we call it.

Please rewiew the tutorials and give me feedback. Thanks!

[JanezCim]

launch lidars on our images in a more seamless fashion.

You mean that on the magni_robot repo, noetic branch? Any idea how to make it more seamless? Id be happy to hear it. :)

Implemented your suggestions @MoffKalast

[MoffKalast]

You mean that on the magni_robot repo, noetic branch? Any idea how to make it more seamless? Id be happy to hear it. :)

Yeah I think it may be worthwhile to have it as a yaml param much like sonars_installed, except lidar_type or lidar_model maybe. Much like it's done in ezmap kinetic right now for the time being. We could probably even add one for the rplidar with @mjstn's assistance.

[JanezCim]

@MoffKalast @mjstn i've now renamed the ls lidar into ur50 lidar in all the tutorials. i've also implemented @MoffKalast s suggestions. I think its now ready to be reviewed again. I think we think about adding tutorials for other lidars in other PRs

[JanezCim]

@MoffKalast and @mjstn this has been stale for some time now but its ready to be reviewed and merged if all is alright.