Added GroupView

[JunHammy]

• Added GroupView feature with collection fetching, error handling, and dynamic rendering of group items.

• Introduced association management components:

  • ManageAssociationsDialog for viewing and modifying artefact–collection memberships.
  • AssociationCard & AssociationSwitch for toggling membership states.
  • State tracking for change detection, reset, and save actions.

• Enhanced EditorCard & GroupCardItem to open the new Manage Associations dialog.

• Added GroupItemMenu (3-dot menu) for quick artefact actions (Edit, Manage Associations).

• Updated GroupView data formatting logic to handle book, category, and batch collection types.

[Prakhar896]

Do ensure that long texts are scaled down appropriately, maybe even convert to text ellipsis? Whatever works best. Otherwise, extremely clean and well-executed.