feat: add SCThingTranslator class. move functionality accordingly

src/core/things/Dish.ts

@@ -88,8 +88,12 @@ export interface SCDish extends SCDishWithoutReferences {
 }
 
 export interface SCDishTranslatableProperties
-  extends SCThingWithCategoriesTranslatableProperties,
-    SCThingThatCanBeOfferedTranslatableProperties {}
+  extends SCThingWithCategoriesTranslatableProperties, SCThingThatCanBeOfferedTranslatableProperties {
+  /**
+   * Characteristics of the dish
+   */
+  characteristics?: string[];
+}
 
 /**
  * Dish meta data
@@ -101,6 +105,21 @@ export class SCDishMeta extends SCThingMeta {
       categories: 'Kategorien',
     },
   };
+
+  static fieldValueTranslations = {
+    ...SCThingMeta.fieldValueTranslations,
+    de: {
+      categories: {
+        appetizer: 'Vorspeise',
+        dessert: 'Nachtisch',
+        'main dish': 'Hauptgericht',
+        salad: 'Salat',
+        'side dish': 'Beilage',
+        soup: 'Suppe',
+      },
+      type: 'Essen',
+    },
+  };
 }
 
 /**