Hide collectives folder by default by prefixing the default name with a `.`

[max-nextcloud]

Is your feature request related to a problem? Please describe. People who are less familiar with Nextcloud end up opening the Collectives folder rather than the app. This happens in particular if the files app is opened after login. The folder has the name spelled out on the screen - which the app icon doesn't.

The result of seeing the folder is confusing for them because "last time everything looked different"

Describe the solution you'd like Prefix the default name with a . so the folder becomes hidden - i.e. .Collectives.

This will reduce the confusion for novice users while still allow advanced users to:

• find the folder by showing hidden files.
• change the name to make the folder always visible.
• Navigate to a file in the folder from the view in files menu entry.

Possible additions

• Add a toggle to the collectives sections Hide collectives folder in files that has this effect.
• #591

Describe alternatives you've considered

• Make this a configuration option per instance.
• We already have a warning linking to collectives inside the files app to avoid the confusion.

Additional context Currently checking in with some people who have more contact with end users.