USB webcam driver + Nitpicker video bridge. The configuration can be adjusted
in _recipes/raw/usb_webcam/usb_webcam.config_. The package offers a Report and a
Capture session. The report is used in order to enable and disable the webcam,
the format must be the same as given by the Qemu webcam model. From the Capture
session, the webcam images can be retrieved.
