Merging existing cart with guest made cart

[bureauvk]

I'm looking for a way to merge the carts when a guest logs in to their existing account, with a guest cart active, and already some cart Items that are added when the user was previous logged in.

Is this something that is already considered?

[gauravmak]

Maybe not. This would be helpful for sure.

We would welcome a PR anytime for the same.