Add all group members to Favorites with one click

[ksz16]

Checklist

• [X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
• [X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
• [X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
• [X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
• [X] This issue contains only one feature request.
• [X] I have read and understood the contribution guidelines.
• [ ] I optionally donated to support the Fossify mission.

Feature description

If you select multiple contacts in the Contacts tab you have the option to add them to Favorites with one click in star icon on the top bar (screenshot 1). If you change the tab to Groups and enter one of the existing groups such possibility does not exist (screenshot 2).

Why do you want this feature?

It would be nice to have such an option to add all members of one group to Favorites with one click.

Additional information

Especially since the synchronization of the Favorites attribute does not work. At least in my case (Nextcloud synchronized using DAVx5).