Arc Browser Support

### Describe the feature you'd like to request

I know that Arc browser from the thebrowsercompany does a lot things different especially with bookmarks. But as a long-time Nextcloud user, it would be really awesome to get Floccus work with Arc?!

### Describe the solution you'd like

Same extension experience like with all the other browsers, so that you can manage and sync your bookmarks with Nextcloud.

### Describe alternatives you've considered

At the moment there is no other alternative. The only way to sync, store or backup bookmarks is to use the vendors own sync service. But that is not what you want as a Nextcloud user.