Add Cameras to GUI

[nico-palmar]

First thing we want to add to the GUI are cameras.

Not only should we add them, but let's take this as an opportunity to inform ourselves about how many cameras we want, and where they should go on the rover.

1. Pull in camera streams (PR that Mesha made with sensors)
2. Show the camera streams in the GUI of choice
3. Think about how the views are displayed. We want to leave space for at least a map somewhere on the page.
4. Try out and decide on how many cameras we want, and how they should be configured on the rover (how they should point).

This is going to require coordination with whoever is working on the drivetrain controller side of things (probably soumya) to see which camera views are good if someone is driving and doesn't want to smash into stuff all over the place.