Added Samples for every Devices

[DavidMansolino]

Describe the Bug According to discussion in #1483, it would be nice to have at least one controller + world for every device PROTO distributed within Webots.

Here are some missing ones (non exhaustive list):

• ConveyorPlatform (missing world).
• MultiSenseS21 (missing controller and world).
• Velodyne (missing controller and world).

[ygoumaz]

Currently, I believe all devices contained in projects/devices don't have any sample world or controller. Is it still relevant?

On the other hand, the Billboard does not have a sample world/controller but should have one, since it is a base node. (see #5428)

[omichel]

It is difficult to find out in which world(s) these devices are actually used. Maybe we could add the list of worlds using a specific device in the XML proto list which is generated by a python script. That would allow us to display this information on webots.cloud in the PROTO viewer so that users can quickly access a sample simulation that uses this device.