Category Improvement suggest

Is your feature request related to a problem? Please describe.

It would be nice to have in the category list a hook or a colour mark. I have about 60 categories and manage my contacts at the moment with Thunderbird 91. I'd like to make that online with your app, because the actual Thunderbird is not able to manage categories.

1. Adding new Categories i didn't find in your App
2. Marking selected Categegories and the ability to select, or unselect categories in the in the list would be much better for a fast workflow (i think that was in the version of last year)
3. I select every contact about 3-6 categories and so it would helpful to see by scrolling to the list fast in which categories a contact is and uncheck / check new to switch a category in the list would very nice.

I change often the categories of an contact, because that is my reminder / resubmission system for sales business to contact my customer.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

No file, test, or entry point is named in the issue. Start by locating the category-list and contact-category editing UI; done would require adding categories, visibly marking selected categories, and supporting fast category selection changes for contacts.