feat: cost unit for custom destinations

src/Form/DestinationType.php

@@ -38,6 +38,9 @@ class DestinationType extends AbstractType
                 'allow_add' => true,
                 'allow_delete' => true,
             ])
+            ->add('costUnit', TextType::class, [
+                'label' => 'Kostenstelle',
+            ])
             ->add('country', ChoiceType::class, [
                 'label' => 'Land',
                 'choices' => [