Allow supervisor and fix start_date in Projects API, add archived_on to InventoryItemSerializer [SCI-11984]

app/controllers/api/v1/projects_controller.rb

@@ -69,7 +69,7 @@ module Api
 
         params.require(:data)
               .require(:attributes)
-              .permit(:name, :visibility, :archived, :project_folder_id, :start_date, :due_date, :status, :description, metadata: {})
+              .permit(:name, :visibility, :supervised_by_id, :archived, :project_folder_id, :start_date, :due_date, :status, :description, metadata: {})
       end
 
       def permitted_includes

app/serializers/api/v1/inventory_item_serializer.rb

@@ -4,7 +4,7 @@ module Api
   module V1
     class InventoryItemSerializer < ActiveModel::Serializer
       type :inventory_items
-      attributes :name, :archived
+      attributes :name, :archived, :archived_on
       has_many :repository_cells, key: :inventory_cells,
                                   serializer: InventoryCellSerializer,
                                   class_name: 'RepositoryCell',

app/serializers/api/v1/project_serializer.rb

@@ -4,7 +4,7 @@ module Api
   module V1
     class ProjectSerializer < ActiveModel::Serializer
       type :projects
-      attributes :name, :status, :visibility, :start_date, :archived, :started_at, :done_at, :start_date, :due_date, :description
+      attributes :name, :status, :visibility, :archived, :started_at, :done_at, :start_date, :due_date, :description
       attribute :metadata, if: -> { scope && scope[:metadata] == true }
 
       belongs_to :project_folder, serializer: ProjectFolderSerializer
@@ -12,10 +12,6 @@ module Api
       has_many :project_comments, key: :comments, serializer: CommentSerializer
 
       include TimestampableModel
-
-      def start_date
-        object.created_at
-      end
     end
   end
 end