Allow custom labels on columns

[neonascent]

Currently you can set up custom filter views but not name them, which makes it hard to tell what's what.

[eddsaura]

Hey could you add an image on what you mean exactly? I'd love to contribute and this one seems like a good start 🧑‍🚀

[neonascent]

@eddsaura, currently the tab titles just reflect the assignee, but if you have multiple tabs with different filters, it's confusing:

Be good to have a way to cutomize / edit the title: