Putting friends list into sub-roles

I would like to sort my friends list into titles, like how in servers you have roles, and as with these roles, you can toggle offline members to either go into (offline) or to stay into the role grayed out.

So for example, one "role" in the friends-list is online. I would like for the GUI to (at best case) customisable, with different roles you can sort your friends with, aswell as making everything smaller / larger so you can have "online" friends and for example "subtitle work' friends side by side.

Thank you.