Feature Request: Auto-delete context-specific cookies

[GBT7]

I think it would be really neat to have a feature to auto-delete cookies only belonging to specific contexts. I use Firefox Containers, and only ever sign into anything in specific containers, so I want to keep the cookies associated with those containers around, while auto-deleting cookies from other containers and the default context. Firefox doesn't have this feature, I think it might make sense for this extension to implement it.

The auto-delete could be either, say, auto-delete after a certain number of hours or days, or auto-delete after closing/opening Firefox. The key thing I want is for it to only apply to specified contexts instead of all cookies.