Multiple selection in a group: adding a “Remove from group” action

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

You recently added the ability to use multiple selection to add contacts to a contact group in a single step (seen in Contacts 8.4.1 (for Nextcloud 33) et 8.3.5 (for Nextcloud 32).

That's great, except that the reverse process isn't possible !

Describe the solution you'd like

Here’s what I suggest:

1. Go to the relevant group
2. Select the contact you want to remove from the group
3. A new icon (next to the others: merge, delete, move to another address book) with a tooltip that reads “Remove {number of selected contacts} contacts from the group”

Describe alternatives you've considered

No response

Additional context

No response