Feature/58163 project specific stage administration

[ulferts]

Ticket

https://community.openproject.org/wp/58163

What are you trying to accomplish?

• A new menu is added to the project menu below the "Project settings" labeled "Project lifecycle"
• It looks and behaves similar to the project attributes administration.
• To see and access the project administration a permission is required.
  • The permissions is called "Select project stages and gates".
  • Roles having the 'edit project' permission will receive the new permission both when seeding and when migrating.
• Within this administration, all currently existing stages and gates are listed.
  • The name and type (stage/gate) is displayed.
    • The type (rhombus for gate, arrow for stage) are displayed in the color defined for the stage/gate.
  • They are listed in the order defined in the instance's administration.
    • The order cannot be changed.
• The project administrator can activate and deactivate a gate/stage.
• Disabled stages/gates will not be displayed:
  • In the overview page
  • In the project list (see ##58160)
• The new functionality is hidden behind the feature flag developed as part of ###58159

Screenshots

TBD

Merge checklist

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