Add automatically in the description "Source: URL" for video imports and channel synchronization

[ROBERT-MCDOWELL]

Describe the problem to be solved

very often it needs to add the source URL of the video we are importing and from channel synchronization to respect the video content creator. for now it needs to copy/paste manually which is painful when thousands of videos and channel sync are occured every day.

Describe the solution you would like

For the respect of some video content creators it would be nice to automatically add in the description "Source: -URL-"
in case of all video imports and from a channel synchronization

[ROBERT-MCDOWELL]

@Chocobozzz I think this feature is very important when we are importing entire channels and sync them with yt-dlp.
I received some complains about it from channel author asking me to put constantly the URL source of their video in the description, despite I told them they can do it on their side but for various reason they didn't fix it.
the trick would be that copy the url of each new video from this channel and just paste it at the start of the description, with no possibility for the PT manager to modify it.