fix: rename dish to meal (#3)

Reviewed-on: #3
Co-authored-by: bdoerfchen <git@bissendorf.co>
Co-committed-by: bdoerfchen <git@bissendorf.co>

model/external/stwbremen/meal.go

@@ -0,0 +1,21 @@
+package stwbremen
+
+type Meal struct {
+	Title       string       `json:"title"`
+	Ingredients []Ingredient `json:"ingredients"`
+	Prices      []Price      `json:"prices"`
+	Location    string       `json:"location"`
+	Date        string       `json:"date"` // YYYY-MM-DD
+	Counter     string       `json:"counter"`
+	Tags        string       `json:"mealadds"`
+}
+
+type Ingredient struct {
+	Label       string   `json:"label"`
+	Additionals []string `json:"additionals"`
+}
+
+type Price struct {
+	Label string `json:"label"`
+	Price string `json:"price"`
+}