Enable camera hdmi Live View output.

[bbc25185]

I would need to have the direct live video of the camera from the HDMI output of the raspberry, in addition to the 4G one.

It would be nice to have an option that enables live video from the camera on the raspberry's hdmi port. I know that it can be done using Gstreamer but it would be nice to have it integrated into the graphical configuration interface.

This need would derive from having a redundant control system (4G and traditional radio system) and being able to have the video feed both on the 4G system and on the traditional one without having to mount 2 different cameras (or manually entering a Custom code)