feat: add more group permissions

[Meierschlumpf]

We could add more group permissions, like for

• Apps
  • Create apps
  • Use all apps
  • Modify all apps
  • Full app access
• Search Engines
  • Create search engines
  • Use all integration search engines
  • Modify all search engines
  • Full search engine access
• Medias
  • Upload media --> permission enabled in everyone group
  • View all medias
  • Full media access --> Delete media
• Others
  • Viewing logs

[Meierschlumpf]

Permissions for users, groups and invites were previously part of this issue. IMO it makes not much sense to have those as permissions as for example the permission user-full-all would be able to delete admins and such, which makes no sense