On progress notifications, use the last timelapse capture image

[Cyber-One]

The plugin appears to me to work great with Discord.
I did notice however, that when it sends a progress notification with a nice image it captured from the camera, that the hot-end and extruder is always in the way.
This is always going to be the case except when Octolapse moves the hot-end out of the way for it's snapshot between layers.
It would be great if this last snapshot could be used instead of the live camera feed.

This would be an enhancement to a great plugin. :-)

Ray