url to toggle led before getting snapshot

[mistaoh]

Thanks a lot for making this. Works really well.
I'm using a ESP32-CAM to take the snapshot and I would like to use the device builtin LED to toggle the "flash". Easiest way to do this is by URL, http://deviceIP/cm?&cmnd=Power%20Toggle, so I'm asking if its possible to add this in the configuration? Like a precondition URL that is loaded before and after the snapshot?

Thanks
/Johan