Modularize cameras

[Matthieu-Andre]

Cameras need to be integrated with the cs.

For that we need a general camera node with states. You need to add services so that the we are able to

• turn the camera on and off
• change the framerate
• change the resolution of the camera
• select if you want RGB, Depth or Both

[rauber6]

is the camera node finished already or still needs coding?