Copy videos into Playlists

[ghost]

Important note
Please check other open and closed issues for a similar feature request before proposing a new one.
Also please leave all headers except this one in the issue, so that it is clear what belongs where.

Is your feature request related to a usage problem (not a bug)? Please describe.
One idea I had relating to playlists is the ability to save them as a Freetube playlist

Describe the solution you'd like to see implemented
One solution I figure was an option of adding a video to a playlist for Freetube, but also an option to add all of them at once, which could make it easier to migrate favorites over if someone is using it from an existing youtube account. So say you have a favorites playlist of twenty videos in a YT account, you open that in Freetube -> hit "Copy videos into playlist" -> select whichever playlist your copying into, and they're now in your Freetube playlist.

[PrestonN]

This is coming with local playlist support. It might be a while before it's implemented though.

[Foxxsayy]

Has the ability to bookmark a playlist been added yet? I currently don't see a way to do it.

[efb4f5ff-1298-471a-8973-3d47447115dc]

No but that will be coming soon after #4234 is merged