Add default folder for user profile images

Hey there!

First of all - i love directus and the team behind it. Keep it up!

I manage all files with folders and every file-field has a default folder where stuff gets stored. So the first layer in the filemanager is always empty.

Exept when a user uploads a profile picture.

Would be nice to define the default folder for those.

I think it would be a breaking change to make the field 'avatar' in 'directus-users' editable. Maybe but it in the project-settings.

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