Feature/69399 required project attributes which are not activated for all project

[EinLama]

Ticket

https://community.openproject.org/wp/69399

What are you trying to accomplish?

• [x] administration -> projects -> project attributes index
  • [x] add "all projects" indicator
• [x] administration -> projects -> project attributes edit
  • [x] show correct caption in "Projects" tab
  • [x] hide "add project" button
• [x] projects -> project attributes index
  • [x] control toggle box via for_all
  • [x] show "all projects" indicator
• [x] administration -> projects -> project attributes -> new (multiple flavors)
  • [x] add is_for_all checkbox
• [ ] double check API
  • [ ] check projects API
  • [ ] check custom fields API
• [x] Project Initiation Request -> for_all fields can be disabled
• [ ] Project Initiation Request -> Toggle service is erratic on "enable all" and "disable all"
• [ ] migration. Warn DevOps, usually there are no migrations allowed after feature freeze

Screenshots

What approach did you choose and why?

Merge checklist

• [ ] Added/updated tests
• [ ] Added/updated documentation in Lookbook (patterns, previews, etc)
• [ ] Tested major browsers (Chrome, Firefox, Edge, ...)