Add missing migrations

db/migrate/20240407175005_add_position_to_group_scores.rb

@@ -0,0 +1,5 @@
+class AddPositionToGroupScores < ActiveRecord::Migration[7.0]
+  def change
+    add_column :group_scores, :position, :integer
+  end
+end

db/migrate/20240407180900_add_default_to_position_in_group_scores.rb

@@ -0,0 +1,5 @@
+class AddDefaultToPositionInGroupScores < ActiveRecord::Migration[7.0]
+  def change
+    change_column_default :group_scores, :position, 0
+  end
+end